void CheckDlgButton(hDlg,nIDButton,wCheck)
This function places a checkmark next to or removes a checkmark from a button control, or changes the state of a three-state button. The CheckDlgButton function sends a BM_SETCHECK message to the button control that has the specified ID in the given dialog box.
| Parameter | Type/Description |
| hDlg | HWND Identifies the dialog box that contains the button. | |
| nIDButton | int Specifies the button control to be modified. | |
| wCheck | WORD Specifies the action to take. If the wCheck parameter is nonzero, the CheckDlgButton function places a checkmark next to the button; if zero, the checkmark is removed. For three-state buttons, if wCheck is 2, the button is grayed; if wCheck is 1, it is checked; if wCheck is 0, the checkmark is removed. |
None.