_ITextBoxEvents Interface Reference

The TextBox class' events interface More...

List of all members.

Public Member Functions

void AbortedDrag (void)

A drag'n'drop operation was aborted

void BeforeDrawText (void)

The control's text is about to be drawn

void BeginDrag (LONG firstChar, LONG lastChar, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user seems to want to drag text

void BeginRDrag (LONG firstChar, LONG lastChar, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user seems to want to drag text

void Click (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user clicked into the control's client area

void ContextMenu (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, VARIANT_BOOL *showDefaultMenu)

The context menu should be displayed

void DblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user double-clicked into the control's client area

void DestroyedControlWindow (LONG hWnd)

The control window was destroyed

void DragMouseMove (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG *autoHScrollVelocity, LONG *autoVScrollVelocity)

The mouse cursor was moved over the control's client area

void Drop (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

A drag'n'drop operation ended successful

void KeyDown (SHORT *keyCode, SHORT shift)

A key was pressed while the control has the focus

void KeyPress (SHORT *keyAscii)

An alphanumeric key was pressed and released while the control has the focus

void KeyUp (SHORT *keyCode, SHORT shift)

A key was released while the control has the focus

void MClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user clicked into the control's client area

void MDblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user double-clicked into the control's client area

void MouseDown (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

A mouse button was pressed over the control's client area

void MouseEnter (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The mouse cursor was moved into the control's client area

void MouseHover (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The mouse cursor was moved into the control's client area a specified period of time before

void MouseLeave (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The mouse cursor was moved out of the control's client area

void MouseMove (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The mouse cursor was moved over the control's client area

void MouseUp (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

A mouse button was released over the control's client area

void OLECompleteDrag (IOLEDataObject *data, OLEDropEffectConstants performedEffect)

An OLE drag'n'drop operation was completed

void OLEDragDrop (IOLEDataObject *data, OLEDropEffectConstants *effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The data was dropped onto the control during OLE drag'n'drop

void OLEDragEnter (IOLEDataObject *data, OLEDropEffectConstants *effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG *autoHScrollVelocity, LONG *autoVScrollVelocity)

The data was dragged into the control during OLE drag'n'drop

void OLEDragEnterPotentialTarget (LONG hWndPotentialTarget)

The user has dragged the data into a potential drop target window during OLE drag'n'drop

void OLEDragLeave (IOLEDataObject *data, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The data was dragged out of the control during OLE drag'n'drop

void OLEDragLeavePotentialTarget (void)

The user has dragged the data out of a potential drop target window during OLE drag'n'drop

void OLEDragMouseMove (IOLEDataObject *data, OLEDropEffectConstants *effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG *autoHScrollVelocity, LONG *autoVScrollVelocity)

The data was dragged over the control during OLE drag'n'drop

void OLEGiveFeedback (OLEDropEffectConstants effect, VARIANT_BOOL *useDefaultCursors)

The mouse cursor needs to be updated during OLE drag'n'drop

void OLEQueryContinueDrag (VARIANT_BOOL pressedEscape, SHORT button, SHORT shift, OLEActionToContinueWithConstants *actionToContinueWith)

The drag source should decide how to proceed with the OLE drag'n'drop operation

void OLEReceivedNewData (IOLEDataObject *data, LONG formatID, LONG Index, LONG dataOrViewAspect)

Data has been stored in the data object

void OLESetData (IOLEDataObject *data, LONG formatID, LONG Index, LONG dataOrViewAspect)

Data is requested from the data object

void OLEStartDrag (IOLEDataObject *data)

The container holding the dragged data needs to be filled up

void OutOfMemory (void)

The control couldn't allocate enough memory

void RClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user clicked into the control's client area

void RDblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)

The user double-clicked into the control's client area

void RecreatedControlWindow (LONG hWnd)

The control window was recreated

void ResizedControlWindow (void)

The control window was resized

void Scrolling (ScrollAxisConstants axis)

The control is being scrolled

void TextChanged (void)

The control's text was changed

void TruncatedText (void)

The text, that was entered into the control, got truncated

void WritingDirectionChanged (WritingDirectionConstants newWritingDirection)

The control's writing direction has been changed by the user

Detailed Description

The TextBox class' events interface

Author:: Timo "TimoSoft" Kunze This interface defines all events the TextBox class may raise.

See also:: ITextBox

Member Function Documentation

void AbortedDrag ( void )

A drag'n'drop operation was aborted

Will be fired if a drag'n'drop operation was aborted.

See also:: Drop, ITextBox::EndDrag

void BeforeDrawText ( void )

The control's text is about to be drawn

Will be fired before the control's content is drawn. This makes it possible to resize the control, if necessary.

Remarks:: This event may be disabled.

See also:: ITextBox::Text

void BeginDrag	(	LONG	firstChar,
		LONG	lastChar,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user seems to want to drag text

Will be fired if the user seems to want to drag text using the left mouse button.

Parameters:

`[in]`	firstChar	The zero-based index of the first character of the text that the user wants to drag.
`[in]`	lastChar	The zero-based index of the last character of the text that the user wants to drag.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid, but usually it is just `vbLeftButton`.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

See also:: ITextBox::BeginDrag, ITextBox::OLEDrag, ITextBox::AllowDragDrop, BeginRDrag

void BeginRDrag	(	LONG	firstChar,
		LONG	lastChar,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user seems to want to drag text

Will be fired if the user seems to want to drag text using the right mouse button.

Parameters:

`[in]`	firstChar	The zero-based index of the first character of the text that the user wants to drag.
`[in]`	lastChar	The zero-based index of the last character of the text that the user wants to drag.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid, but usually it is just `vbRightButton`.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

See also:: ITextBox::BeginDrag, ITextBox::OLEDrag, ITextBox::AllowDragDrop, BeginDrag

void Click	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user clicked into the control's client area

Will be fired if the user clicks into the control's client area using the left mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the click. This should always be `vbLeftButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: DblClick, MClick, RClick, ITextBox::DisabledEvents

void ContextMenu	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y,
		VARIANT_BOOL *	showDefaultMenu
	)

The context menu should be displayed

Will be fired if the control's context menu should be displayed.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the menu's proposed position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the menu's proposed position relative to the control's upper-left corner.
`[in,out]`	showDefaultMenu	If set to `True`, the default context menu is displayed; otherwise the control doesn't display any context menu itself, but you may display your custom menu.

See also:: RClick

void DblClick	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user double-clicked into the control's client area

Will be fired if the user double-clicks into the control's client area using the left mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the double-click. This should always be `vbLeftButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the double-click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: Click, MDblClick, RDblClick, ITextBox::DisabledEvents

void DestroyedControlWindow ( LONG hWnd )

The control window was destroyed

Will be fired after the control window was destroyed.

Parameters:

[in] hWnd The control's window handle.

See also:: RecreatedControlWindow, ITextBox::hWnd

void DragMouseMove	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y,
		LONG *	autoHScrollVelocity,
		LONG *	autoVScrollVelocity
	)

The mouse cursor was moved over the control's client area

Will be fired if the user moves the mouse cursor over the control's client area during a drag'n'drop operation.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in,out]`	autoHScrollVelocity	The speed multiplier for horizontal auto-scrolling. If set to 0, horizontal auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls to the left; if set to a value greater than 0, the control auto-scrolls to the right. The higher/lower the value is, the faster the control scrolls.
`[in,out]`	autoVScrollVelocity	The speed multiplier for vertical auto-scrolling. If set to vertical auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls upwardly; if set to a value greater than 0, the control auto-scrolls downwards. The higher/lower the value is, the faster the control scrolls.

See also:: MouseMove, OLEDragMouseMove, ITextBox::DragScrollTimeBase, ITextBox::SetInsertMarkPosition, ITextBox::BeginDrag

void Drop	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

A drag'n'drop operation ended successful

Will be fired if a drag'n'drop operation ended successful.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

See also:: AbortedDrag, ITextBox::EndDrag

void KeyDown	(	SHORT *	keyCode,
		SHORT	shift
	)

A key was pressed while the control has the focus

Will be fired if the user presses a key while the control has the focus.

Parameters:

`[in,out]`	keyCode	The pressed key. Any of the values defined by VB's `KeyCodeConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.

Remarks:: You may set keyCode to 0 to eat the message.
This event may be disabled.

See also:: KeyUp, KeyPress, ITextBox::DisabledEvents

void KeyPress ( SHORT * keyAscii )

An alphanumeric key was pressed and released while the control has the focus

Will be fired if the user presses and releases an alphanumeric key while the control has the focus.

Parameters:

[in,out] keyAscii The pressed key's ASCII code.

Remarks:: You may set keyAscii to 0 to eat the message.
This event may be disabled.

See also:: KeyDown, KeyUp, ITextBox::DisabledEvents

void KeyUp	(	SHORT *	keyCode,
		SHORT	shift
	)

A key was released while the control has the focus

Will be fired if the user releases a key while the control has the focus.

Parameters:

`[in,out]`	keyCode	The released key. Any of the values defined by VB's `KeyCodeConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.

Remarks:: You may set keyCode to 0 to eat the message.
This event may be disabled.

See also:: KeyDown, KeyPress, ITextBox::DisabledEvents

void MClick	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user clicked into the control's client area

Will be fired if the user clicks into the control's client area using the middle mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the click. This should always be `vbMiddleButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MDblClick, Click, RClick, ITextBox::DisabledEvents

void MDblClick	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user double-clicked into the control's client area

Will be fired if the user double-clicks into the control's client area using the middle mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the double-click. This should always be `vbMiddleButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the double-click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MClick, DblClick, RDblClick, ITextBox::DisabledEvents

void MouseDown	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

A mouse button was pressed over the control's client area

Will be fired if the user presses a mouse button while the mouse cursor is located over the control's client area.

Parameters:

`[in]`	button	The pressed mouse button. Any of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseUp, Click, MClick, RClick, ITextBox::DisabledEvents

void MouseEnter	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The mouse cursor was moved into the control's client area

Will be fired if the user moved the mouse cursor into the control's client area.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseLeave, MouseHover, MouseMove, ITextBox::DisabledEvents

void MouseHover	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The mouse cursor was moved into the control's client area a specified period of time before

Will be fired if the mouse cursor has been located over the control's client area for the number of milliseconds specified by the ITextBox::HoverTime property.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseEnter, MouseLeave, MouseMove, ITextBox::HoverTime, ITextBox::DisabledEvents

void MouseLeave	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The mouse cursor was moved out of the control's client area

Will be fired if the user moves the mouse cursor out of the control's client area.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseEnter, MouseHover, MouseMove, ITextBox::DisabledEvents

void MouseMove	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The mouse cursor was moved over the control's client area

Will be fired if the user moves the mouse cursor over the control's client area.

Parameters:

`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseEnter, MouseLeave, MouseDown, MouseUp, ITextBox::DisabledEvents

void MouseUp	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

A mouse button was released over the control's client area

Will be fired if the user releases a mouse button while the mouse cursor is located over the control's client area.

Parameters:

`[in]`	button	The released mouse button. Any of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: MouseDown, Click, MClick, RClick, ITextBox::DisabledEvents

void OLECompleteDrag	(	IOLEDataObject *	data,
		OLEDropEffectConstants	performedEffect
	)

An OLE drag'n'drop operation was completed

Will be fired after OLE drag'n'drop if the drag'n'drop operation was completed successfully.

Parameters:

`[in]`	data	The object that holds the dragged data. The drop target may have added data to it.
`[in]`	performedEffect	The performed drop effect. Any of the values (except `odeScroll`) defined by the `OLEDropEffectConstants` enumeration is valid.

See also:: ITextBox::OLEDrag, OLEStartDrag, IOLEDataObject::GetData

void OLEDragDrop	(	IOLEDataObject *	data,
		OLEDropEffectConstants *	effect,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The data was dropped onto the control during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user completes the operation while the mouse cursor is located over the control's client area.

Parameters:

`[in]`	data	The dropped data.
`[in,out]`	effect	On entry, a bit field of the drop effects (defined by the `OLEDropEffectConstants` enumeration) supported by the drag source. On return, this paramter must be set to the drop effect that the target finally executed.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: Don't forget to release any references that you hold to the data object.

See also:: OLEDragEnter, OLEDragMouseMove, OLEDragLeave, MouseUp, ITextBox::RegisterForOLEDragDrop, OLEDropEffectConstants

void OLEDragEnter	(	IOLEDataObject *	data,
		OLEDropEffectConstants *	effect,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y,
		LONG *	autoHScrollVelocity,
		LONG *	autoVScrollVelocity
	)

The data was dragged into the control during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user moved the mouse cursor into the control's client area.

Parameters:

`[in]`	data	The dragged data.
`[in,out]`	effect	On entry, a bit field of the drop effects (defined by the `OLEDropEffectConstants` enumeration) supported by the drag source. On return, this paramter must be set to the drop effect that the target wants to be used on drop.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in,out]`	autoHScrollVelocity	The speed multiplier for horizontal auto-scrolling. If set to 0, horizontal auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls to the left; if set to a value greater than 0, the control auto-scrolls to the right. The higher/lower the value is, the faster the control scrolls.
`[in,out]`	autoVScrollVelocity	The speed multiplier for vertical auto-scrolling. If set to vertical auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls upwardly; if set to a value greater than 0, the control auto-scrolls downwards. The higher/lower the value is, the faster the control scrolls.

See also:: OLEDragMouseMove, OLEDragLeave, OLEDragDrop, MouseEnter, ITextBox::RegisterForOLEDragDrop, OLEDropEffectConstants, ITextBox::DragScrollTimeBase

void OLEDragEnterPotentialTarget ( LONG hWndPotentialTarget )

The user has dragged the data into a potential drop target window during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user dragged the mouse cursor into a potential drop target window.

Parameters:

[in] hWndPotentialTarget The potential drop target window's handle.

Remarks:: Requires Windows Vista or newer.

See also:: OLEDragLeavePotentialTarget, ITextBox::OLEDrag

void OLEDragLeave	(	IOLEDataObject *	data,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The data was dragged out of the control during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user moves the mouse cursor out of the control's client area or if the user canceled the drag'n'drop operation.

Parameters:

`[in]`	data	The dragged data.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.

Remarks:: Don't forget to release any references that you hold to the data object.

See also:: OLEDragEnter, OLEDragMouseMove, OLEDragDrop, MouseLeave, ITextBox::RegisterForOLEDragDrop

void OLEDragLeavePotentialTarget ( void )

The user has dragged the data out of a potential drop target window during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user dragged the mouse cursor out of a potential drop target window.

Remarks:: Requires Windows Vista or newer.

See also:: OLEDragEnterPotentialTarget, ITextBox::OLEDrag

void OLEDragMouseMove	(	IOLEDataObject *	data,
		OLEDropEffectConstants *	effect,
		SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y,
		LONG *	autoHScrollVelocity,
		LONG *	autoVScrollVelocity
	)

The data was dragged over the control during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the user moves the mouse cursor over the control's client area.

Parameters:

`[in]`	data	The dragged data.
`[in,out]`	effect	On entry, a bit field of the drop effects (defined by the `OLEDropEffectConstants` enumeration) supported by the drag source. On return, this paramter must be set to the drop effect that the target wants to be used on drop.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the mouse cursor's position relative to the control's upper-left corner.
`[in,out]`	autoHScrollVelocity	The speed multiplier for horizontal auto-scrolling. If set to 0, horizontal auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls to the left; if set to a value greater than 0, the control auto-scrolls to the right. The higher/lower the value is, the faster the control scrolls.
`[in,out]`	autoVScrollVelocity	The speed multiplier for vertical auto-scrolling. If set to vertical auto-scrolling is disabled; if set to a value less than 0, the control auto-scrolls upwardly; if set to a value greater than 0, the control auto-scrolls downwards. The higher/lower the value is, the faster the control scrolls.

See also:: OLEDragEnter, OLEDragLeave, OLEDragDrop, MouseMove, ITextBox::RegisterForOLEDragDrop, OLEDropEffectConstants, ITextBox::DragScrollTimeBase

void OLEGiveFeedback	(	OLEDropEffectConstants	effect,
		VARIANT_BOOL *	useDefaultCursors
	)

The mouse cursor needs to be updated during OLE drag'n'drop

Will be fired during OLE drag'n'drop if the mouse cursor should be updated to visualize the current drop effect.

Parameters:

`[in]`	effect	The current drop effect. It is chosen by the potential drop target. Any of the values defined by the `OLEDropEffectConstants` enumeration is valid.
`[in,out]`	useDefaultCursors	If set to `True`, the system's default mouse cursors are used to visualize the various drop effects. If set to `False`, custom mouse cursors are used. You must set the custom cursor within the handler of this event.

See also:: ITextBox::OLEDrag, OLEQueryContinueDrag, OLEDropEffectConstants

void OLEQueryContinueDrag	(	VARIANT_BOOL	pressedEscape,
		SHORT	button,
		SHORT	shift,
		OLEActionToContinueWithConstants *	actionToContinueWith
	)

The drag source should decide how to proceed with the OLE drag'n'drop operation

Will be fired during OLE drag'n'drop if the keyboard or mouse button state has changed. It gives the drag source the chance to cancel or complete the drag'n'drop operation.

Parameters:

`[in]`	pressedEscape	If `True`, the user has pressed the `ESC` key since the last time this event was fired.
`[in]`	button	The pressed mouse buttons. Any combination of the values defined by VB's `MouseButtonConstants` enumeration is valid.
`[in]`	shift	The pressed modifier keys (Shift, Ctrl, Alt). Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in,out]`	actionToContinueWith	Indicates whether to continue, cancel or complete the drag'n'drop operation. Any of the values defined by the `OLEActionToContinueWithConstants` enumeration is valid.

See also:: ITextBox::OLEDrag, OLEGiveFeedback, OLEActionToContinueWithConstants

void OLEReceivedNewData	(	IOLEDataObject *	data,
		LONG	formatID,
		LONG	Index,
		LONG	dataOrViewAspect
	)

Data has been stored in the data object

Will be fired during OLE drag'n'drop if data in the specified format has been written into the dragged data object.

Parameters:

`[in]`	data	The object that holds the dragged data.
`[in]`	formatID	An integer value specifying the format the data object has received data for. Valid values are those defined by VB's `ClipBoardConstants` enumeration, but also any other format that was registered using the `RegisterClipboardFormat` API function.
`[in]`	index	An integer value that is assigned to the internal `FORMATETC` struct's `lindex` member. Usually it is -1, but some formats like `CFSTR_FILECONTENTS` require multiple `FORMATETC` structs for the same format. In such cases each struct of this format will have a separate index.
`[in]`	dataOrViewAspect	An integer value that is assigned to the internal `FORMATETC` struct's `dwAspect` member. Any of the `DVASPECT_*` values defined by the Microsoft® Windows® SDK are valid. The default is `DVASPECT_CONTENT`.

Remarks:: This event won't be fired if a custom IDataObject implementation was passed to the OLEDrag method.

See also:: OLESetData, IOLEDataObject::GetData, RegisterClipboardFormat, FORMATETC, CFSTR_FILECONTENTS, DVASPECT

void OLESetData	(	IOLEDataObject *	data,
		LONG	formatID,
		LONG	Index,
		LONG	dataOrViewAspect
	)

Data is requested from the data object

Will be fired during OLE drag'n'drop if data is requested from the dragged data object in a data format, that you've chosen to support (in the OLEStartDrag event), but for which you didn't provide any data so far.
Call the provided object's SetData method to provide the data. If you chose to not support this data format, simply do nothing.

Parameters:

`[in]`	data	The object that holds the dragged data.
`[in]`	formatID	An integer value specifying the format the drop target is requesting data for. Valid values are those defined by VB's `ClipBoardConstants` enumeration, but also any other format that was registered using the `RegisterClipboardFormat` API function.
`[in]`	index	An integer value that is assigned to the internal `FORMATETC` struct's `lindex` member. Usually it is -1, but some formats like `CFSTR_FILECONTENTS` require multiple `FORMATETC` structs for the same format. In such cases each struct of this format will have a separate index.
`[in]`	dataOrViewAspect	An integer value that is assigned to the internal `FORMATETC` struct's `dwAspect` member. Any of the `DVASPECT_*` values defined by the Microsoft® Windows® SDK are valid. The default is `DVASPECT_CONTENT`.

Remarks:: This event won't be fired if a custom IDataObject implementation was passed to the OLEDrag method.

See also:: OLEStartDrag, IOLEDataObject::SetData, RegisterClipboardFormat, FORMATETC, CFSTR_FILECONTENTS, DVASPECT

void OLEStartDrag ( IOLEDataObject * data )

The container holding the dragged data needs to be filled up

Will be fired after you called the OLEDrag method to determine the data you're offering. You must call the provided object's SetData method for each data format you're offering data in.

Parameters:

[in] data The object that holds the dragged data.

Remarks:: This event won't be fired if a custom IDataObject implementation was passed to the OLEDrag method.

See also:: ITextBox::OLEDrag, OLESetData, OLECompleteDrag, IOLEDataObject::SetData

void OutOfMemory ( void )

The control couldn't allocate enough memory

Will be fired if the control cannot allocate enough memory to meet a specific request.

void RClick	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user clicked into the control's client area

Will be fired if the user clicks into the control's client area using the right mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the click. This should always be `vbRightButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: ContextMenu, RDblClick, Click, MClick, ITextBox::DisabledEvents

void RDblClick	(	SHORT	button,
		SHORT	shift,
		OLE_XPOS_PIXELS	x,
		OLE_YPOS_PIXELS	y
	)

The user double-clicked into the control's client area

Will be fired if the user double-clicks into the control's client area using the right mouse button.

Parameters:

`[in]`	button	The mouse buttons that were pressed during the double-click. This should always be `vbRightButton` (defined by VB's `MouseButtonConstants` enumeration).
`[in]`	shift	The modifier keys (Shift, Ctrl, Alt) that were pressed during the double-click. Any combination of the values defined by VB's `ShiftConstants` enumeration is valid.
`[in]`	x	The x-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.
`[in]`	y	The y-coordinate (in twips) of the double-click's position relative to the control's upper-left corner.

Remarks:: This event may be disabled.

See also:: RClick, DblClick, MDblClick, ITextBox::DisabledEvents

void RecreatedControlWindow ( LONG hWnd )

The control window was recreated

Will be fired after the control window was destroyed and recreated.
Some properties can't be changed after the control window was created. If such a property is changed and the control window already exists, it is destroyed and recreated.

Parameters:

[in] hWnd The control's window handle.

See also:: DestroyedControlWindow, ITextBox::hWnd

void ResizedControlWindow ( void )

The control window was resized

Will be fired after the control window was resized.

void Scrolling ( ScrollAxisConstants axis )

The control is being scrolled

Will be fired if the control is being scrolled.

Parameters:

[in] axis The axis which is scrolled. Any of the values defined by the ScrollAxisConstants enumeration is valid.

Remarks:: This event isn't raised if the MultiLine property is set to False.
This event may be disabled.

See also:: ITextBox::MultiLine, ITextBox::ScrollBars, ITextBox::DisabledEvents, ScrollAxisConstants

void TextChanged ( void )

The control's text was changed

Will be fired after the control's content was changed.

Remarks:: This is the control's default event.
This event may be disabled.

See also:: ITextBox::Text

void TruncatedText ( void )

The text, that was entered into the control, got truncated

Will be fired if the text, that was entered into the control, got truncated. This happens in the following situations:

The control's resulting text would have been longer than allowed by the MaxTextLength property.
The control would have to scroll horizontally to display the entered text, but the AutoScrolling property doesn't include asHorizontal.
The control would have to scroll vertically to display the entered text, but the AutoScrolling property doesn't include asVertical.

See also:: ITextBox::Text, ITextBox::MaxTextLength, ITextBox::AutoScrolling

void WritingDirectionChanged ( WritingDirectionConstants newWritingDirection )

The control's writing direction has been changed by the user

Will be fired if the control's writing direction has been changed by the user.

Parameters:

[in] newWritingDirection The control's new writing direction. Any of the values defined by the WritingDirectionConstants enumeration is valid.

Remarks:: Due to limitations of Microsoft Windows, this event is not raised if the writing direction is changed using the control's default context menu.

See also:: ITextBox::RightToLeft, WritingDirectionConstants


Public Member Functions
void	AbortedDrag (void)
	A drag'n'drop operation was aborted
void	BeforeDrawText (void)
	The control's text is about to be drawn
void	BeginDrag (LONG firstChar, LONG lastChar, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user seems to want to drag text
void	BeginRDrag (LONG firstChar, LONG lastChar, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user seems to want to drag text
void	Click (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user clicked into the control's client area
void	ContextMenu (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, VARIANT_BOOL *showDefaultMenu)
	The context menu should be displayed
void	DblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user double-clicked into the control's client area
void	DestroyedControlWindow (LONG hWnd)
	The control window was destroyed
void	DragMouseMove (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG autoHScrollVelocity, LONG autoVScrollVelocity)
	The mouse cursor was moved over the control's client area
void	Drop (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	A drag'n'drop operation ended successful
void	KeyDown (SHORT *keyCode, SHORT shift)
	A key was pressed while the control has the focus
void	KeyPress (SHORT *keyAscii)
	An alphanumeric key was pressed and released while the control has the focus
void	KeyUp (SHORT *keyCode, SHORT shift)
	A key was released while the control has the focus
void	MClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user clicked into the control's client area
void	MDblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user double-clicked into the control's client area
void	MouseDown (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	A mouse button was pressed over the control's client area
void	MouseEnter (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The mouse cursor was moved into the control's client area
void	MouseHover (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The mouse cursor was moved into the control's client area a specified period of time before
void	MouseLeave (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The mouse cursor was moved out of the control's client area
void	MouseMove (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The mouse cursor was moved over the control's client area
void	MouseUp (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	A mouse button was released over the control's client area
void	OLECompleteDrag (IOLEDataObject *data, OLEDropEffectConstants performedEffect)
	An OLE drag'n'drop operation was completed
void	OLEDragDrop (IOLEDataObject data, OLEDropEffectConstants effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The data was dropped onto the control during OLE drag'n'drop
void	OLEDragEnter (IOLEDataObject data, OLEDropEffectConstants effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG autoHScrollVelocity, LONG autoVScrollVelocity)
	The data was dragged into the control during OLE drag'n'drop
void	OLEDragEnterPotentialTarget (LONG hWndPotentialTarget)
	The user has dragged the data into a potential drop target window during OLE drag'n'drop
void	OLEDragLeave (IOLEDataObject *data, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The data was dragged out of the control during OLE drag'n'drop
void	OLEDragLeavePotentialTarget (void)
	The user has dragged the data out of a potential drop target window during OLE drag'n'drop
void	OLEDragMouseMove (IOLEDataObject data, OLEDropEffectConstants effect, SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y, LONG autoHScrollVelocity, LONG autoVScrollVelocity)
	The data was dragged over the control during OLE drag'n'drop
void	OLEGiveFeedback (OLEDropEffectConstants effect, VARIANT_BOOL *useDefaultCursors)
	The mouse cursor needs to be updated during OLE drag'n'drop
void	OLEQueryContinueDrag (VARIANT_BOOL pressedEscape, SHORT button, SHORT shift, OLEActionToContinueWithConstants *actionToContinueWith)
	The drag source should decide how to proceed with the OLE drag'n'drop operation
void	OLEReceivedNewData (IOLEDataObject *data, LONG formatID, LONG Index, LONG dataOrViewAspect)
	Data has been stored in the data object
void	OLESetData (IOLEDataObject *data, LONG formatID, LONG Index, LONG dataOrViewAspect)
	Data is requested from the data object
void	OLEStartDrag (IOLEDataObject *data)
	The container holding the dragged data needs to be filled up
void	OutOfMemory (void)
	The control couldn't allocate enough memory
void	RClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user clicked into the control's client area
void	RDblClick (SHORT button, SHORT shift, OLE_XPOS_PIXELS x, OLE_YPOS_PIXELS y)
	The user double-clicked into the control's client area
void	RecreatedControlWindow (LONG hWnd)
	The control window was recreated
void	ResizedControlWindow (void)
	The control window was resized
void	Scrolling (ScrollAxisConstants axis)
	The control is being scrolled
void	TextChanged (void)
	The control's text was changed
void	TruncatedText (void)
	The text, that was entered into the control, got truncated
void	WritingDirectionChanged (WritingDirectionConstants newWritingDirection)
	The control's writing direction has been changed by the user