On Sunday 25 July 2004 10:18 pm, druid wrote:
> I call a popup from main with a menu selection
> from the popup I have another menu
> WHen I select an Item form the Popup's menu I want the
> current popup to close and open the new popup
What I like to do is use frmUpdateEvent as a popup dispatcher. In my main
form's event handler, I'll do something like this:
case frmUpdateEvent:
switch (e->data.frmUpdate.updateCode) {
case frmRedrawUpdateCode:
FrmDrawForm(FrmGetActiveForm());
break;
case UC_POPUP1_START:
FrmPopupForm(POPUP1);
break;
case UC_POPUP1_STOP:
/* maybe I want to do something whenever POPUP1 is dismissed */
break;
case UC_POPUP2_START:
FrmPopupForm(POPUP2);
break;
case UC_POPUP2_STOP:
break;
}
return true;
When I want to fire off a popup, I'll use FrmUpdateForm(). Likewise, from
the popup's handler, I'll use FrmUpdateForm() to indicate to the "caller"
that the popup has been dismissed.
For example, to start popup from anywhere:
FrmUpdateForm(MainForm, UC_POPUP1_START);
And inside the popup's handler, when I want to dismiss:
FrmUpdateForm(MainForm, UC_POPUP1_STOP);
FrmReturnToForm(MainForm);
And, as per your example, if I wanted to cause a transition from POPUP1 to
POPUP2, I would do it one of two ways.
>From POPUP1:
FrmUpdateForm(MainForm, UC_POPUP1_STOP);
FrmUpdateForm(MainForm, UC_POPUP2_START);
FrmReturnToForm(MainForm);
Or I would put some logic in "case UC_POPUP1_STOP" to do it in the caller.
That is more likely since I would want to snarf some stuff prior to the
secondary popup.
To be honest, I don't really use UC_POPUP1_START.. I just FrmPopupForm()
wherever I need it. And I use multiple update codes depending on what type
of popup dismissal (OK, Cancel, etc). My point is, that using
FrmUpdateForm() from your popup's handler is a way to notify the calling
form what it should do next.
--
/* Chris Faherty <[EMAIL PROTECTED]> */
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