Wxwidgets x11 glcanvas

Functions to modify

• src/gtk/glcanvas.cpp :

** line 170 : wxGLCanvas::wxGLCanvas() construction function calls "Create()" -> src/gtk/window.cpp "wxWindowGTK::Create()" -> src/common/wincpp.cpp "wxWindow::CreateBase()" -> "CreateBase()" -> SetParent() which fails.

Commenting the "SetParent()" function avoids hang when program starts -see why. Idea : the GLCanvas may have no parent.

** line 273 : wxGLCanvas::GetXWindow() : return a (X11) Window from a GdkWindow returned by neutral "GTKGetDrawingWindow()"

NOTE : even if we don't call it explicitly, it's used during every client program compilation -commenting it or putting between X11 #ifdefs makes undefined references - -see why

• include/wx/utils.h :

** line 772 : "wxGetDisplay()" function for GTK+ returns void*, which can't be converted to GDKDisplay. Make it return GdkDisplay.

** line 785 : wrapper function "wxGetX11Display()" returns (X11) Display from "wxGetDisplay()." As this now returns GdkDisplay, make it return X11 (Display) via "gdk_x11_display_get_xdisplay()".

• src/gtk/utilsgtk.cpp :

** line 78 : "wxGetDisplay()" should return a GdkDisplay with a neutral function such a "gtk_display_get_default()".

• building tries to Scintilla library, with many X11 calls. Disable it with : --disable-stc