The DL_CANCELDRAG notification message signals that the user has canceled a drag operation by clicking the right mouse button or pressing the ESC key. A drag list box sends DL_CANCELDRAG to its parent window in the form of a drag list message.
DL_CANCELDRAG idCtl = (int) wParam; pDragInfo = (LPDRAGLISTINFO) lParam;
No return value.
By processing the DL_CANCELDRAG notification message, an application can reset its internal state to indicate that dragging is not in effect.
file: /Techref/os/win/api/win32/mess/src/msg04_1.htm, 1KB, , updated: 2000/4/7 12:19, local time: 2024/9/1 18:18,
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