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XSetTransientForHint, XGetTransientForHint - set or read a window's WM_TRANSIENT_FOR property


int XSetTransientForHint(Display *display, Window w,
Window prop_window);
Status XGetTransientForHint(Display *display, Window w,
Window *prop_window_return);


Specifies the connection to the X server.

Specifies the window.

Specifies the window that the WM_TRANSIENT_FOR property is to be set to.

Returns the WM_TRANSIENT_FOR property of the specified window.


The XSetTransientForHint function sets the WM_TRANSIENT_FOR property of the specified window to the specified prop_window.

XSetTransientForHint can generate BadAlloc and BadWindow errors.

The XGetTransientForHint function returns the WM_TRANSIENT_FOR property for the specified window. It returns a nonzero status on success; otherwise, it returns a zero status.

XGetTransientForHint can generate a BadWindow error.


Set by application programs to indicate to the window manager that a transient top-level window, such as a dialog box.


The server failed to allocate the requested resource or server memory.
A value for a Window argument does not name a defined Window.

See Also

XAllocClassHint(3X11) , XAllocIconSize(3X11) , XAllocSizeHints(3X11) , XAllocWMHints(3X11) , XSetCommand(3X11) , XSetTextProperty(3X11) , XSetWMClientMachine(3X11) , XSetWMColormapWindows(3X11) , XSetWMIconName(3X11) , XSetWMName(3X11) , XSetWMProperties(3X11) , XSetWMProtocols(3X11) , XStringListToTextProperty(3X11)
Xlib - C Language X Interface

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