Thanks for any help.
This program is attempting to write two windows to the screen.
I suspect the handles/instances might be the problem because of my understanding
of them. Checked Petzold's book but it didn't seem to help.
See the attacked zip file.
- you are using uninitialized local variables (hInst,frstchild)
- you should also think about the live time of a local variable
- do you want to create a top level window or a child window?
Hi Qword,
Attempting to create two windows parent and child
Quote from: shankle on June 26, 2011, 08:14:07 PM
Attempting to create two windows parent and child
a parent window with a child control? - see attachment.
you can create the child in the WM_CREATE code of the parent
sometimes a bit messy to share the same WndProc for both - sometimes, not so bad
to get started, it is probably easier to seperate them
Using one WndProc is only useful/makeable for windows that doesn't need the use of global variables - however, this can be break by using the extra memory associate with current window (WNDCLASS.cbWndExtra)
Jack,
Its good advice to use a separate WndProc for each window, either parent or child. About the only time you safely use a common WndProc is for identical controls in the form of a subclass.
Thanks Hutch,
Didn't know I could do that.
Will give it a shot.