XSetCommand, XGetCommand - set or read a window's WM_COMMAND property
int XSetCommand(Display *display, Window w, char
**argv, int argc);
Status XGetCommand(Display *display, Window w,
char ***argv_return, int *argc_return);
- argc
- Specifies the number of arguments.
- argc_return
- Returns the number of arguments returned.
- argv
- Specifies the application's argument list.
- argv_return
- Returns the application's argument list.
- display
- Specifies the connection to the X server.
- w
- Specifies the window.
The XSetCommand function sets the command and arguments used to invoke
the application. (Typically, argv is the argv array of your main program.) If
the strings are not in the Host Portable Character Encoding, the result is
implementation-dependent.
XSetCommand can generate BadAlloc and
BadWindow errors.
The XGetCommand function reads the WM_COMMAND property from
the specified window and returns a string list. If the WM_COMMAND property
exists, it is of type STRING and format 8. If sufficient memory can be
allocated to contain the string list, XGetCommand fills in the
argv_return and argc_return arguments and returns a nonzero status.
Otherwise, or if any other error is encountered, it returns a zero status.
If the data returned by the server is in the Latin Portable Character
Encoding, then the returned strings are in the Host Portable Character
Encoding. Otherwise, the result is implementation-dependent. To free the
memory allocated to the string list, use XFreeStringList.
- WM_COMMAND
- The command and arguments, null-separated, used to invoke the
application.
- BadAlloc
- The server failed to allocate the requested resource or server
memory.
- BadWindow
- A value for a Window argument does not name a defined Window.
XAllocClassHint(3), XAllocIconSize(3), XAllocSizeHints(3), XAllocWMHints(3),
XSetTransientForHint(3), XSetTextProperty(3), XSetWMClientMachine(3),
XSetWMColormapWindows(3), XSetWMIconName(3), XSetWMName(3),
XSetWMProperties(3), XSetWMProtocols(3), XStringListToTextProperty(3)
Xlib - C Language X Interface