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windowptr.readme
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1991-11-20
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All requesters in the Requester Toolkit check the pr_WindowPtr of your
process to find the screen they should open on.
These code fragments show you how to set/restore the pr_WindowPtr of your
process.
-----------------------------------------------------------------------------
...
struct Window *win;
struct Process *myproc;
APTR oldwinptr;
main()
{
myproc = (struct Process *)FindTask (NULL);
/* get old window pointer */
oldwinptr = myproc->pr_WindowPtr;
...
/* Open your screen */
...
/* Open window on your screen */
win = OpenWindow (&newwindow);
if (!win) FreeExit();
/* change the window pointer */
myproc->pr_WindowPtr = win;
...
/* now all requesters from the Requester Toolkit will appear
on the screen your window is on. */
...
}
-----------------------------------------------------------------------------
In 'FreeExit()' you MUST restore the old windowptr before closing your
window and exiting!
-----------------------------------------------------------------------------
FreeExit()
{
...
/* restore old window pointer before closing window */
myproc->pr_WindowPtr = oldwinptr;
if (win) CloseWindow (win);
...
exit (0);
}