diff --git a/panda/src/wcrdisplay/wcrGraphicsWindow.cxx b/panda/src/wcrdisplay/wcrGraphicsWindow.cxx
index c2b6001f8a..ff982b2dd9 100644
--- a/panda/src/wcrdisplay/wcrGraphicsWindow.cxx
+++ b/panda/src/wcrdisplay/wcrGraphicsWindow.cxx
@@ -1000,7 +1000,7 @@ void wcrGraphicsWindow::swap() {
     chromium.SwapBuffers();
 }
 
-void wcrGraphicsWindow::resize(unsigned int xsize,unsigned int ysize) {
+bool wcrGraphicsWindow::resize(unsigned int xsize,unsigned int ysize) {
     if (!_props._fullscreen) {
         // resizing windowed mode is easy
         SetWindowPos(_mwindow, NULL, 0,0, xsize,ysize, SWP_NOZORDER | SWP_NOMOVE | SWP_NOSENDCHANGING);
@@ -1021,7 +1021,7 @@ void wcrGraphicsWindow::resize(unsigned int xsize,unsigned int ysize) {
       DEVMODE dm;
       if (!find_acceptable_display_mode(dwWidth,dwHeight,dwFullScreenBitDepth,dm)) {
           wcrdisplay_cat.fatal() << "window resize(" << xsize << "," << ysize << ") failed, no compatible fullscreen display mode found!\n";
-          return;
+          return false;
       }
 
       // this causes WM_SIZE msg to be produced
@@ -1038,6 +1038,7 @@ void wcrGraphicsWindow::resize(unsigned int xsize,unsigned int ysize) {
       assert(_pCurrent_display_settings!=NULL);
       memcpy(_pCurrent_display_settings,&dm,sizeof(DEVMODE));
     }
+    return true;
 }
 
 unsigned int wcrGraphicsWindow::
diff --git a/panda/src/wcrdisplay/wcrGraphicsWindow.h b/panda/src/wcrdisplay/wcrGraphicsWindow.h
index 41fb1311dd..3233bba0e7 100644
--- a/panda/src/wcrdisplay/wcrGraphicsWindow.h
+++ b/panda/src/wcrdisplay/wcrGraphicsWindow.h
@@ -133,7 +133,7 @@ public:
   virtual void deactivate_window();
   virtual void reactivate_window();
 
-  virtual void resize(unsigned int xsize,unsigned int ysize);
+  virtual bool resize(unsigned int xsize,unsigned int ysize);
   virtual unsigned int verify_window_sizes(unsigned int numsizes,unsigned int *dimen);
 
 protected: