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
Parameters
-
wParam
-
This parameter is not used and must be zero.
-
lParam
-
This parameter is not used and must be zero.
Return value
This message does not return a value.
Remarks
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.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|