WM_SYSCOMMAND Field - uscmd

uscmd (USHORT)

Command value.

The frame control takes the action described on these uscmd values:

SC_SIZE

Sends a WM_TRACKFRAME (in Frame Controls) to the frame window.
SC_MOVE
Sends a WM_TRACKFRAME (in Frame Controls) to the frame window.
SC_MINIMIZE
If a control with the identifier FID_MINMAX is present, minimizes the frame window; otherwise nothing is done.
SC_MAXIMIZE
If a control with the identifier FID_MINMAX is present, maximizes the frame window; otherwise nothing is done.

When a window is moved or sized in the normal way at least one border should remain on the screen. When a window is maximized and the maximum size is as large as the screen, all borders should be positioned just outside the screen.

SC_RESTORE
If a control with the identifier FID_MINMAX is present, restores a maximized or minimized frame window to its previous size and position; otherwise nothing is done.
SC_NEXT
Cycles the active window status to the next main window.
SC_APPMENU
Sends a MM_STARTMENUMODE message to the control with the identifier FID_MENU.
SC_SYSMENU
Sends a MM_STARTMENUMODE message to the control with the identifier FID_SYSMENU.
SC_CLOSE
If Close is not enabled in the system menu, this message is ignored. Otherwise the frame posts a WM_CLOSE message to the client if it exists or to itself, if not.
SC_NEXTFRAME
The next frame window that is a child of the desktop window is activated.
SC_NEXTWINDOW
The next window with the same owner window is activated.
SC_TASKMANAGER
The Task List is activated.
SC_HELPEXTENDED
The frame manager sends HM_EXT_HELP to the associated Help Manager Object Window. If there is no such associated window, the original message is sent to the client.
SC_HELPKEYS
The frame manager sends HM_KEYS_HELP to the associated Help Manager Object Window. If there is no such associated window, the original message is sent to the client.
SC_HELPINDEX
The frame manager sends HM_HELP_INDEX to the associated Help Manager Object Window. If there is no such associated window, the original message is sent to the client.
SC_HIDE
Sets the visibility state of the frame window to off causing it to appear hidden or invisible.

---

[Back: WM_SYSCOMMAND]
[Next: WM_SYSCOMMAND Field - ussource]