DROPEFFECT DoDragDrop( LPCRECT lpItemRect, CPoint ptOffset, BOOL bIncludeLink = FALSE, DWORD dwEffects = DROPEFFECT_COPY | DROPEFFECT_MOVE, LPCRECT lpRectStartDrag = NULL );
Return Value
A value from the DROPEFFECT enumeration. If it is DROPEFFECT_MOVE, the original data should be removed.
Parameters
lpItemRect
The item’s rectangle on screen, in pixels, relative to the client area.
ptOffset
The offset from lpItemRect where the mouse position was at the time of the drag.
bIncludeLink
Set this to TRUE if link data should be copied to the Clipboard. Set it to FALSE if your application does not support links.
dwEffects
Determines the effects that the drag source will allow in the drag operation (a combination of Copy, Move, and Link).
lpRectStartDrag
Pointer to the rectangle that defines where the drag actually starts. For more information, see the following Remarks section.
Remarks
Call the DoDragDrop member function to perform a drag-and-drop operation. The drag-and-drop operation does not start immediately. It waits until the mouse cursor leaves the rectangle specified by lpRectStartDrag or until a specified number of milliseconds have passed. If lpRectStartDrag is NULL, a default rectangle is used so that the drag starts when the mouse cursor moves one pixel.
The delay time is specified by a registry key setting. You can change the delay time by calling CWinApp::WriteProfileString or CWinApp::WriteProfileInt. If you do not specify the delay time, a default value of 200 milliseconds is used. Drag delay time is stored as follows:
For more information about how drag delay information is stored in either the registry or the .INI file, see ::WriteProfileString in the Platform SDK.
COleServerItem Overview | Class Members | Hierarchy Chart
See Also COleDataSource::DoDragDrop, COleServerItem::CopyToClipboard