Update the fl_gc global variable also when Fl_Graphics_Driver::set_gc() is called.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11190 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

3 files changed, 3 insertions, 3 deletions

diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver.h b/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
index 722c7410a..6fd93dbfc 100644
--- a/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
+++ b/src/drivers/GDI/Fl_GDI_Graphics_Driver.h
@@ -43,7 +43,7 @@ public:
   const char *class_name() {return class_id;};
   virtual int has_feature(driver_feature mask) { return mask & NATIVE; }
   char can_do_alpha_blending();
-  virtual void set_gc(void *ctxt) {gc = (HDC)ctxt;}
+  virtual void set_gc(void *ctxt) {if (ctxt != gc) global_gc(); gc = (HDC)ctxt;}
   virtual void *get_gc() {return gc;}
 
   // --- bitmap stuff
diff --git a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.h b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.h
index c9a6c916e..3e069040f 100644
--- a/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.h
+++ b/src/drivers/Quartz/Fl_Quartz_Graphics_Driver.h
@@ -44,7 +44,7 @@ public:
   static const char *class_id;
   const char *class_name() {return class_id;};
   virtual int has_feature(driver_feature mask) { return mask & NATIVE; }
-  virtual void set_gc(void *ctxt) {gc = (CGContextRef)ctxt;}
+  virtual void set_gc(void *ctxt) {if (ctxt != gc) global_gc(); gc = (CGContextRef)ctxt; }
   virtual void *get_gc() {return gc;}
   char can_do_alpha_blending();
 
diff --git a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx
index b9ac31eff..0a7950388 100644
--- a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx
+++ b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx
@@ -37,7 +37,6 @@ GC fl_gc = 0;
 
 void Fl_Graphics_Driver::global_gc()
 {
-  fl_gc = (GC)get_gc();
 }
 
 
@@ -57,6 +56,7 @@ Fl_Xlib_Graphics_Driver::Fl_Xlib_Graphics_Driver(void) {
     fl_open_display();
     // the unique GC used by all X windows
     gc = XCreateGC(fl_display, RootWindow(fl_display, fl_screen), 0, 0);
+    fl_gc = gc;
   }
 }