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This message is sent when the user selects a command item from a menu, when a control sends a message to its parent window, or when an accelerator keystroke is translated.
WM_COMMAND wNotifyCode = HIWORD(wParam);wID = LOWORD(wParam);hwndCtl = (HWND)lParam;
Parameters
- wNotifyCode
Value of the high-order word of wParam. Specifies the notification code if the message is from a control. If the message is from an accelerator, this parameter is 1. If the message is from a menu, this parameter is 0. - wID
Value of the low-order word of wParam. Specifies the identifier of the menu item, control, or accelerator. - hwndCtl
Handle to the control sending the message if the message is from a control. Otherwise, this parameter is NULL.
Return Values
An application should return zero if it processes this message.
Remarks
Accelerator keystrokes that select items from the window menu are translated into WM_SYSCOMMAND messages.
If an accelerator keystroke occurs that corresponds to a menu item when the window that owns the menu is minimized, no WM_COMMAND message is sent. However, if an accelerator keystroke occurs that does not match any of the items in the window's menu or in the window menu, a WM_COMMAND message is sent, even if the window is minimized.
If an application enables a menu separator, the system sends a WM_COMMAND message with the low-word of the wParam parameter set to zero when the user selects the separator.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Winuser.h.
See Also
WM_SYSCOMMAND | Menus Messages
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