int XChangeGC(Display *display, GCgc, unsigned longvaluemask, XGCValues *values); Status XGetGCValues(Display *display, GCgc, unsigned longvaluemask, XGCValues *values_return); int XFreeGC(Display *display, GCgc); GContext XGContextFromGC(GCgc); ...
XChangeGC Syntax XChangeGC(display,gc,valuemask,values)Display*display;GCgc; unsigned longvaluemask;XGCValues*values; Arguments displaySpecifies the connection to the X server. gcSpecifies the GC. valuemaskSpecifies which components in the GC are to be changed using information in the specified ...
GC gc,boolcontext_selected)const{ XGCValues gcvalues;// Set width and cap style; project beyond end point up to 1/2// line thicknessgcvalues.line_width = _linethickness; gcvalues.cap_style = CapProjecting;XChangeGC(XtDisplay(w), gc, GCLineWidth | GCCapStyle, &gcvalues);// Keep an ...
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