[Plplot-devel] [ plplot-Bugs-1737273 ] Blank window when using wxWidgets driver in Windows

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Bugs item #1737273, was opened at 2007-06-14 15:24
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Chris Mumby (chrismumby)
Assigned to: Nobody/Anonymous (nobody)
Summary: Blank window when using wxWidgets driver in Windows

Initial Comment:
After building project files for VC++2005 Express from the latest svn checkout and compiling the libs and then the examples, running any of the demo's with the wxWidgets driver selected always resulted in a blank screen (client area). That is, there was a window and there was also a white cursor. 

After managing to get VC++ to step through the library code I saw that the wxDc object never got created 9remained null) and that the flags in wxPlDev for freetype, antiliasing were uninitialised and thus some non-zero number which when used in an if statement to test the flag for true or false always resulted in true. So i zeroed these in the c'tor of wxPlDev and recompiled, and the examples now work, I can see the graphs.

This is my first bug report, and have done a diff (from TortoiseSVN) which although I have never used assume it is easy to use this file with a program to patch the file. the file modified is wxwidgets.cpp (4 lines) in the folder drivers. Only tested on winxp SP2 and wxWidgets cvs head, although i had the same problem when i last tried with 2.8.

I hope this is the right place for the patch.
Chris Mumby


diff:

-----------------------------------------------------
Index: wxwidgets.cpp
===================================================================
--- wxwidgets.cpp	(revision 7713)
+++ wxwidgets.cpp	(working copy)
@@ -502,6 +502,11 @@
   plstate_color0 = false;
   plstate_color1 = false;
 
+  //disable for now
+  freetype=0;
+  smooth_text=0;
+  antialized=0;
+
 #ifdef HAVE_AGG
   m_rendering_buffer=NULL;
   m_strokewidth=1.0;


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=102915&aid=1737273&group_id=2915