Re: How to make CStatic and Slider control make transparent in ATL/STL?

From:

"Alexander Nickolov" <agnickolov@mvps.org>

Newsgroups:

microsoft.public.vc.atl

Date:

Mon, 22 Jan 2007 10:05:40 -0800

Message-ID:

<#jyMu$kPHHA.4824@TK2MSFTNGP02.phx.gbl>

Don't 'or' the constants as you end up with an invalid value.
Provide two cases. Plus make sure you request per-item
drawing too.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

<sujeeshlal@gmail.com> wrote in message
news:1169379417.218057.76140@m58g2000cwm.googlegroups.com...

ooh.. i found the problem...it was boz of CHAIN_MSG_MAP, which has been
declared abouve the function call..

but again i failed to make slider as tranparent.. I tried Like this

NOTIFY_HANDLER(IDC_SLIDER1, NM_CUSTOMDRAW, OnCustomdrawSlider1)

LRESULT OnCustomdrawSlider1(int idCtrl, LPNMHDR pnmh, BOOL& bHandled)
{
LPNMCUSTOMDRAW lpNMCustomDraw = (LPNMCUSTOMDRAW)pnmh;
switch(lpNMCustomDraw->dwDrawStage)
{
case (CDDS_ITEMPREPAINT | CDDS_ITEMPREERASE):
// here we can do some custom drawing for selected subitem
return (LRESULT)GetStockObject(HOLLOW_BRUSH);

}
}

any clue?

sujeeshlal@gmail.com wrote:

when i add WM_CTLCOLORSTATIC , it seems its not calling...
I tried like this..

BEGIN_MSG_MAP(CStreamPlayer)
CHAIN_MSG_MAP(CComCompositeControl<CMYDlg>)
MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
MESSAGE_HANDLER(WM_CTLCOLORSTATIC, OnCtlColorStatic)
END_MSG_MAP()

LRESULT OnCtlColorStatic(UINT uMsg, WPARAM wParam, LPARAM lParam,
BOOL& bHandled)
{
bHandled = TRUE;
SetBkMode((HDC) wParam, TRANSPARENT);
//SetBkColor((HDC) wParam, RGB(0,0,255));
return (LRESULT)GetStockObject(WHITE_BRUSH);
}

Whats missing in this function call.. Pls help..

Suje

Alexander Nickolov wrote:

For the static control - return GetStockObject(NULL_BRUSH)
from your WM_CTLCOLORSTATIC message handler (note you
need a resource ID for your static control in oder to identify
it, unless you want all static controls transparent).

For the trackbar (slider) control read up on NM_CUSTOMDRAW.
I expect you'll need to select a NULL brush in the HDC when
handling CDDS_ITEMPREERASE.

Don't forget to remove the WS_CLIPCHILDREN style of the
parent window (dialog)...

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

<sujeeshlal@gmail.com> wrote in message
news:1169126942.156982.38870@l53g2000cwa.googlegroups.com...

Hi,

I have an ATL Dialog without supporting MFC which contains a
background
image. How can i make transparent the static and slider control in my
dialog .

I cant see WM_Controlcolor msg in my Dialog. Also when i tried to
subclass the CStatic , it shows undeclared identifier.

Somebody please help
regards
suje

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