XSetClassHint(3X11)XSetClassHint(3X11)Name
XSetClassHint, XGetClassHint - set or get class hint
Syntax
XSetClassHint(display, w, class_hints)
Display *display;
Window w;
XClassHint *class_hints;
Status XGetClassHint(display, w, class_hints_return)
Display *display;
Window w;
XClassHint *class_hints_return;
Arguments
class_hints
Specifies a pointer to a structure that is to be used.
class_hints_return
Returns the structure.
display Specifies the connection to the X server.
w Specifies the window.
Description
The function sets the class hint for the specified window.
can generate and errors.
The function returns the class of the specified window. To free res_name and res_class when finished with the strings, use
can generate a error.
Property
WM_CLASS
Diagnostics
The server failed to allocate the requested resource or server memory.
A value for a Window argument does not name a defined Window.
See AlsoXSetCommand(3X11), XSetIconName(3X11), XSetIconSizeHints(3X11), XSetNormalHints(3X11), XSetSizeHints(3X11), XSetStandardProperties(3X11),
XSetTransientForHint(3X11), XSetWMHints(3X11), XSetZoomHints(3X11), XStoreName(3X11)
Guide to the Xlib Library
XSetClassHint(3X11)
Check Out this Related Man Page
XAllocClassHint(3X11) MIT X11R4 XAllocClassHint(3X11)Name
XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint - allocate class hints structure and set or read a window's WM_CLASS property
Syntax
XClassHint *XAllocClassHint()
XSetClassHint(display, w, class_hints)
Display *display;
Window w;
XClassHint *class_hints;
Status XGetClassHint(display, w, class_hints_return)
Display *display;
Window w;
XClassHint *class_hints_return;
Arguments
display Specifies the connection to the X server.
class_hints
Specifies the structure that is to be used.
class_hints_return
Returns the structure.
w Specifies the window.
Description
The function allocates and returns a pointer to a structure. Note that the pointer fields in the structure are initially set to NULL. If
insufficient memory is available, returns NULL. To free the memory allocated to this structure, use
The function sets the class hint for the specified window.
can generate and errors.
The function returns the class of the specified window. To free res_name and res_class when finished with the strings, use
can generate a error.
Properties
WM_CLASS Set by application programs to allow window and session managers to obtain the application's resources from the resource data-
base.
Structures
The structure contains:
typedef struct {
char *res_name;
char *res_class;
} XClassHint;
The res_name member contains the application name, and the res_class member contains the application class. Note that the name set in this
property may differ from the name set as WM_NAME. That is, WM_NAME specifies what should be displayed in the title bar and, therefore, can
contain temporal information (for example, the name of a file currently in an editor's buffer). On the other hand, the name specified as
part of WM_CLASS is the formal name of the application that should be used when retrieving the application's resources from the resource
database.
Diagnostics
The server failed to allocate the requested resource or server memory.
A value for a Window argument does not name a defined Window.
See AlsoXAllocIconSize(3X11), XAllocSizeHints(3X11), XAllocWMHints(3X11), XFree(3X11), XSetCommand(3X11), XSetTransientForHint(3X11), XSetTextProp-
erty(3X11), XSetWMClientMachine(3X11), XSetWMColormapWindows(3X11), XSetWMIconName(3X11), XSetWMName(3X11), XSetWMProperties(3X11), XSetWM-
Protocols(3X11), XStringListToTextProperty(3X11)
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys
XAllocClassHint(3X11)