fixed null message prob on gtk

svn path=/trunk/matplotlib/; revision=705

Author: jdh2358

examples/anim_tk.py

@@ -6,31 +6,40 @@
 
 #import Tkinter as Tk
 import matplotlib.numerix as numerix
-
 fig = matplotlib.matlab.figure(1)
 ind = numerix.arange(60)
+
+
+
 x_tmp=[]
 for i in range(100):
     x_tmp.append(numerix.sin((ind+i)*numerix.pi/15.0))
 
 X=numerix.array(x_tmp)
+
+
 lines = matplotlib.matlab.plot(X[:,0],'o')
 
 manager = matplotlib.matlab.get_current_fig_manager()
+
 def updatefig(*args):
     updatefig.count += 1
     lines[0].set_ydata(X[:,updatefig.count%60])
     manager.canvas.draw()
     return updatefig.count
 updatefig.count=-1
 
-
+def run(*args):
+    print 'called run'
+
+    import time
+    tstart = time.time()
+    while 1:
+        cnt = updatefig()
+        if cnt==100: break
+        print 'elapsed', 100.0/(time.time() - tstart)
+    
+import Tkinter as Tk
+manager.window.after(10, run)
 manager.show()
-import time
-tstart = time.time()
-while 1:
-    cnt = updatefig()
-    if cnt==100: break
-
-
-print 'elapsed', 100.0/(time.time() - tstart)
+Tk.mainloop()

lib/matplotlib/backends/backend_gtk.py

@@ -1551,6 +1551,6 @@ def exception_handler(type, value, tb):
     else:
         msg = value
 
-    error_msg_gtk(msg)
+    if len(msg): error_msg_gtk(msg)
 
 sys.excepthook = exception_handler