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Oren Halvani
Guest
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 Posted: Wed Aug 17, 2005 1:24 pm Post subject: How to make a window at *runtime* topmost via:-SetWindowPos( |
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dear builders,
i'm trying to make a window topmost in runtime..i know some people here
suggested me to avoid it, but i have to...
i'm using: SetWindowPos(..) to set it as topmost - what works fine..
but the window is not recreated..so i using UpdateWindow(handle..)
but it still does not recreate...i already tryed: ShowWindow() and
BringToFront()
but --NOTHING-- seems to force the window to be recreated...
what else do i need...?
Oren
/*********************************************************/
void __fastcall TfrmOptions::chkForegroundClick(TObject *Sender)
{
if(chkForeground->Checked)
{
imgAlways_OnTop1->Visible = true;
imgAlways_OnTop2->Visible = false;
SetWindowPos(Handle, HWND_TOPMOST, Left, Top, Width,
Height,SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
UpdateWindow(frmOptions->Handle);
}
else
{
imgAlways_OnTop1->Visible = false;
imgAlways_OnTop2->Visible = true;
SetWindowPos(Handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE |
SWP_NOSIZE);
UpdateWindow(frmOptions->Handle);
}
}
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Remy Lebeau (TeamB)
Guest
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| Posted: Wed Aug 17, 2005 6:32 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Oren Halvani" <NoSpam (AT) fdtd (DOT) com> wrote
| Quote: | i'm using: SetWindowPos(..) to set it as topmost - what works
fine..but the window is not recreated..
|
It is not supposed to be.
| Quote: | so i using UpdateWindow(handle..) but it still does not recreate...
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You do not need the window to be recreated to begin with. Why are you
trying to force that?
| Quote: | if(chkForeground->Checked)
{
snip
}
else
{
snip
SetWindowPos(Handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE |
SWP_NOSIZE);
UpdateWindow(frmOptions->Handle);
}
}
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Look closely at that code. Notice anything particularly wrong? You are
setting the window to be top-most regardless of your chkForeground checkbox.
You are NOT removing the top-most attribute when the checkbox is becomes
unchecked. You need to use HWND_NOTOPMOST to remove the attribute. Try
this code instead:
void __fastcall TfrmOptions::chkForegroundClick(TObject *Sender)
{
bool bForeground = chkForeground->Checked;
imgAlways_OnTop1->Visible = bForeground;
imgAlways_OnTop2->Visible = !bForeground;
SetWindowPos(Handle, (bForeground) ? HWND_TOPMOST : HWND_NOTOPOST,
0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
}
Gambit
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Oren Halvani
Guest
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| Posted: Thu Aug 18, 2005 6:16 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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thanks Remy,
well i forgot to say something:
the Foreground-CheckBox is on a another form, NOT
the main form, so i've added...
void __fastcall TfrmOptions::chkForegroundClick(TObject *Sender)
{
bool bForeground = chkForeground->Checked;
imgAlways_OnTop1->Visible = bForeground;
imgAlways_OnTop2->Visible = !bForeground;
SetWindowPos(frmMainUnit->Handle, (bForeground) ? HWND_TOPMOST : HWND_NOTOPMOST,0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
/*...THIS */ SetWindowPos(frmOptions->Handle, (bForeground) ? HWND_TOPMOST : HWND_NOTOPMOST,0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
}
is this OK..? i mean it looks fine while i'm testing it, but
just wanted to know if it's safe..
Oren
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Remy Lebeau (TeamB)
Guest
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| Posted: Thu Aug 18, 2005 6:56 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Oren Halvani" <xx (AT) xx (DOT) com> wrote
| Quote: | the Foreground-CheckBox is on a another form, NOT the main form
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That makes no difference at all.
| Quote: | SetWindowPos(frmMainUnit->Handle, (bForeground) ? HWND_TOPMOST :
HWND_NOTOPMOST,0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
/*...THIS */ SetWindowPos(frmOptions->Handle, (bForeground) ?
HWND_TOPMOST : HWND_NOTOPMOST,0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); |
Why are you setting two separate windows to be top-most at the same time?
Gambit
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Oren Halvani
Guest
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| Posted: Thu Aug 18, 2005 8:22 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> schrieb im Newsbeitrag
news:4304d9be$1 (AT) newsgroups (DOT) borland.com...
| Quote: | Why are you setting two separate windows to be top-most at the same time?
Gambit
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because, if i'm setting the main-window as topmost, the option-window
will be in the background, it has to be in the foreground (even after the
user has clicked the foreground-checkbox)
and that means the option-window has to be also top-most...
do you have another idea as mine...?
Oren
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Remy Lebeau (TeamB)
Guest
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| Posted: Thu Aug 18, 2005 9:00 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Oren Halvani" <xx (AT) xx (DOT) com> wrote
| Quote: | because, if i'm setting the main-window as topmost, the option
window will be in the background, it has to be in the foreground
(even after the user has clicked the foreground-checkbox)
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Why are you making your options window top-most at all? If the main window
is top-most, showing the options window modally will automatically show it
on top of the main widow without actually making it a top-most window.
Gambit
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Oren Halvani
Guest
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| Posted: Thu Aug 18, 2005 9:32 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> schrieb im Newsbeitrag
news:4304f6ce$1 (AT) newsgroups (DOT) borland.com...
| Quote: |
Why are you making your options window top-most at all? If the main window
is top-most, showing the options window modally will automatically show it
on top of the main widow without actually making it a top-most window.
Gambit
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thats the point, it doesn't !
i guess it's the famous BCB3 - "ShowModal() bug" i heared in the past about it...
anyway, it seems to work pretty fine now, i'll have to make further tests,
the release-date is next week :-)
Oren
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Remy Lebeau (TeamB)
Guest
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| Posted: Thu Aug 18, 2005 11:03 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Oren Halvani" <xx (AT) xx (DOT) com> wrote
| Quote: | thats the point, it doesn't !
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I have projects that do that and it works fine.
| Quote: | i guess it's the famous BCB3 - "ShowModal() bug" i heared
in the past about it...
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You seriously need to stop using BCB3. You are a decade behind in bug fixes
and features.
Gambit
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Oren Halvani
Guest
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| Posted: Thu Aug 18, 2005 11:40 pm Post subject: Re: How to make a window at *runtime* topmost via:-SetWindow |
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"Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> schrieb im Newsbeitrag
news:430513a5$1 (AT) newsgroups (DOT) borland.com...
| Quote: | You seriously need to stop using BCB3. You are a decade behind in bug fixes
and features.
Gambit
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you are right again, but many, many of my projects have been started with BCB 3...
i also have BCB 6, but as i've tryed to convert my projects to the new XML
project-format of BCB 6, i've get too many errors so, i'm still use BCB3 :-(
besides this, i like BCB 3 because it produces compact & small exe files, as you know
the VCL in BCB3 doesn't support so many functionality like BCB6...
and another reason why i like BCB3: i bought it as i've been at school :-)
but i know it's a very old version and one day i realy should change :-(
Oren
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