From ef952dfa5366cb4c7a7109b63629ea02a7fc576d Mon Sep 17 00:00:00 2001 From: Albrecht Schlosser Date: Fri, 7 Feb 2014 00:09:52 +0000 Subject: Fix crash when Fl_Window::flush() is called before show() (STR #3028). The fix is twofold: (1) if Fl_Window::flush() is called, this is ignored silently (2) if Fl_Window::make_current() is called directly, but the window is currently not shown(), then the program will be terminated with an error message. The latter is necessary because returning from make_current() would leave the program in a state where it would expect to have a valid drawing context. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10095 ea41ed52-d2ee-0310-a9c1-e6b18d33e121 --- src/Fl_Double_Window.cxx | 1 + 1 file changed, 1 insertion(+) (limited to 'src/Fl_Double_Window.cxx') diff --git a/src/Fl_Double_Window.cxx b/src/Fl_Double_Window.cxx index 943e065af..fb93c9cd9 100644 --- a/src/Fl_Double_Window.cxx +++ b/src/Fl_Double_Window.cxx @@ -369,6 +369,7 @@ void Fl_Double_Window::flush() {flush(0);} and leaving the clip region set to the entire window. */ void Fl_Double_Window::flush(int eraseoverlay) { + if (!shown()) return; make_current(); // make sure fl_gc is non-zero Fl_X *myi = Fl_X::i(this); if (!myi) return; // window not yet created -- cgit v1.2.3