sj wrote: > I am just learning to use Tkinter and am having problems displaying image > files. I am able to display an image using tutorials (such as > http://www.daniweb.com/code/snippet296.html) But when I try my own code all > I get is an empty widget. What is wrong with the following program? > > > > from Tkinter import * > > class Foo(Frame): > > def __init__(self,master=None): > Frame.__init__(self,master) > self.pack() > self.createWidgets() > > > def createWidgets(self): > > self.qbutton = Button(self) > self.qbutton["text"] = "Quit" > self.qbutton["command"] = self.quit > self.qbutton.pack(side = "top") > > idata = > PhotoImage(file="/home/sj/documents/projects/xaed/images/cat_001.gif") > > canvas = Canvas(width=300,height=200) > canvas.pack(side="top",fill=BOTH,expand=YES) > canvas.create_image(50,10,image=idata,anchor=NW) > > ## lab = Label(self,image=idata) > ## lab.pack(side=TOP) > > > root = Tk() > app = Foo(root) > app.mainloop() > #app.destroy()
If you keep a reference of the photoImage object then it will work! ... self.idata= PhotoImage(file="/home/sj/documents/projects/xaed/images/cat_001.gif") ... canvas.create_image(50,10,image=iself.data,anchor=NW) ... By making the PhotoImage an attribute of your object, you keep a reference that the garbage collector will NOT collect, So you're image will continue to exist and thus be rendered by the canvas. JM -- http://mail.python.org/mailman/listinfo/python-list
