WM_CLEAR message
An application sends a WM_CLEAR message to an edit control or combo box to delete (clear) the current selection, if any, from the edit control.
#define WM_CLEAR 0x0303
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wParam
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This parameter is not used and must be zero.
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lParam
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This parameter is not used and must be zero.
This message does not return a value.
The deletion performed by the WM_CLEAR message can be undone by sending the edit control an EM_UNDO message.
To delete the current selection and place the deleted content on the clipboard, use the WM_CUT message.
When sent to a combo box, the WM_CLEAR message is handled by its edit control. This message has no effect when sent to a combo box with the CBS_DROPDOWNLIST style.
Requirement | Value |
---|---|
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
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