MsgBox vs Messagebox

[Andre Jacobs]

I have stumbled upon a situation that I can not explain/understand.

Can someone please explain this?

'    Dialog Show Modal hDlg, Call ShowDIALOG8Proc To lRslt
    Dialog Show Modeless hDlg, Call ShowDIALOG8Proc To lRslt
    MessageBox hDlg, "Messagebox - result = " + Str$(lRslt), "RB", %mb_ok
    MsgBox "MsgBox - result = " + Str$(lRslt), %mb_taskmodal, "RB"

If the code above is executed I get both messages, From MessageBox as well as from MsgBox.

However if I execute this:

    Dialog Show Modal hDlg, Call ShowDIALOG8Proc To lRslt
'    Dialog Show Modeless hDlg, Call ShowDIALOG8Proc To lRslt
    MessageBox hDlg, "Messagebox - result = " + Str$(lRslt), "RB", %mb_ok
    MsgBox "MsgBox - result = " + Str$(lRslt), %mb_taskmodal, "RB"

There is only one message, the one from MsgBox,
The MessageBox one disappeared, went for a "walk", or just refuses to do something

Anybody have any ideas?

It is not so important in the context of this example, but I am sure there must be a valid explanation for it.
Some basic principle that I am unaware of, that will sneak up and bite when least expected.

[Kev Peel]

Invalid parent handle (hDlg) since by then the modal dialog would have been destroyed.

A quick check with GetLastError would have told you that . MSGBOX does not have a parent thus is not affected.

[Andre Jacobs]

Thanks Kev,

I knew it had to be something obvious, sometimes when one is too close to the situation, the obvious is missed.

Then again if nothing goes wrong, then there is nothing to learn.