Queries the ImageList Control for the index of the item at the specified location.
Pointer to a POINT structure containing the location to test.
|>=0||The index of the item at the specified location.|
|< SUCCESS||An error occurred. Refer to Return Codes.|
This function will return the 0 based index of the item at the specified location if one exists.
The location is in MM_TEXT mapping mode (pixels), and is relative to the client area of the control's window.
For an example, refer to LImageListControl::MsgProcCallBack.
Medical Web Viewer .NET
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