The documentation for COleClientItem::DoDragDrop(),
COleServerItem::DoDragDrop(), and COleDataSource::DoDragDrop()
give the following incorrect information for the lpRectStartDrag parameter:
In Visual C++ Prior to 5.0
Pointer to the rectangle that defines where the drag
actually starts. It does not start until the mouse cursor leaves the
rectangle. If NULL, a default rectangle is used so that the drag
starts when the mouse cursor moves one pixel.
In Visual C++ 5.0
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,
the size of the rectangle is one pixel. The delay time is specified by the
DragDelay value in the [Windows] section of WIN.INI. If this value is not
in WIN.INI, the default value of 200 milliseconds is used.
Correction
The documentation for the lpRectStartDrag parameter for DoDragDrop() should
be:
Pointer to the rectangle that defines where the drag
actually starts. It does not start until the mouse cursor leaves the
rectangle or until a specific number of milliseconds has passed. If
NULL, a default rectangle is used so that the drag starts when the
mouse cursor moves one pixel. The number of milliseconds is specified
by a registry key setting. The value can be found in the Windows NT
system registry under the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\NT\CurrentVersion\IniFileMapping\win.ini\Windows\DragDelay,
or in the WIN.INI file under the [Windows] section if running under
Windows version 3.x. If the key is not present, a default value of 200
milliseconds is used.
This problem was corrected in Visual C++ version 6.0 for Windows.
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