Re: CStatic::SetIcon Transparent.
Hi Joe,
Thank you very much for the reply. You have pointed out the correct
situation. The CStatic is just big enough to hold the icon. However, The icon
is transparent.
My problem is that, in CDialog, I have painted the title bar myself (In
CDialog::OnPaint, with GradientFill ). And in the top left corner I want to
attach the ICON. So I used the CStatic to hold this ICON. When I paint the
whole dialog with the single color, it works fine. But when I try to paint
the title bar (which I have created) with GradientFill color, it just takes
the background color of dialog and not the gradient color. Here I want icon
to take the background as gradient. I hope I have stated the problem
correctly.
Can we have an offline discussion on this, if possoble ?
Regards,
Paresh.
Returning NULL_BRUSH tells it to use the transparent brush when painting anything that is
NOT the icon. If the CStatic is just big enough to hold the icon, then this will have no
effect.
Icons are not transparent. However, there is an option to use the "background color" to
create the icon, so the parts that are in the background color show through. The
non-background parts of the icon will not be transparent.
****
*************************************************
"Joseph M. Newcomer" wrote:
See below...
On Tue, 22 Apr 2008 01:51:01 -0700, Paresh <Paresh@discussions.microsoft.com> wrote:
class CMyDialog : public CDialog
{
........
CStatic m_StaticIcon;
........
}
HBRUSH CMyDialog:nCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
****
I would not consider the possibility of putting this in the dialog handler at all. I
would create a subclass of CStatic and use the reflected =WM_CTLCOLOR handler to handle
it. Otherwise, you have now introduced a completely gratuitous dependency on some random
hWnd into the test.
****
{
HBRUSH hbr = CDialog:nCtlColor(pDC, pWnd, nCtlColor);
switch(nCtlColor)
{
case CTLCOLOR_STATIC:
if (pWnd->m_hWnd == m_StaticIcon.m_hWnd)
{
pDC->SetBkMode(TRANSPARENT);
return (HBRUSH)(GetStockObject(NULL_BRUSH));
****
Returning NULL_BRUSH tells it to use the transparent brush when painting anything that is
NOT the icon. If the CStatic is just big enough to hold the icon, then this will have no
effect.
Icons are not transparent. However, there is an option to use the "background color" to
create the icon, so the parts that are in the background color show through. The
non-background parts of the icon will not be transparent.
****
}
break;
}
return hbr;
}
BOOL CMyDialog:nInitDialog()
{
.........
m_StaticIcon.Create(_T(""), WS_CHILD | WS_VISIBLE | SS_ICON,
CRect(0, 0, 0, 0), this);
****
Why not create this at design time? I see no reason it should be created at run time.
****
HICON hIcon = ::LoadIcon(AfxGetResourceHandle(), MAKEINTRESOURCE(ICON_ID));
m_StaticIcon.SetIcon(hIcon);
.........
}
In CMyDialog:nPaint(), I have painted a region of CDialog with
GradientFill(...), and on this area I want a static icon, which needs to be
transparent. So that I can see the background of CStatic icon as gradient.
****
You need to use the background-color to create the icon.
joe
****
Regards,
Paresh.
"somefoobar@gmail.com" wrote:
Can you paste the code that you have? That should help in identifying
the problem.
On Apr 22, 11:34 am, Paresh <Par...@discussions.microsoft.com> wrote:
Hi,
I am using the API CStatic::SetIcon to associate the icon with the static
control. I have placed this control on CDialog, (Dialog background is
gradient painted). I want this CStatic control to be transparent (so that the
background of CStatic would be gradient, which is of Dialogs background
color). However, icon image is transparent. How could I do this ?
Any help would be highly appreciated.
Thanks,
Paresh.
Joseph M. Newcomer [MVP]
email: newcomer@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm