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Change ICON of Picture Control

I create a ATL dialog and put a pitcure control, IDC_TESTICON.

I try to put system icon in this pitcure control but nothing changed.

Do I miss something?

LRESULT OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
   CAxDialogImpl<CppInvalidRecipientsDlg>::OnInitDialog(uMsg, wParam, lParam, bHandled);
 
    // Centres the window relative to the parent window.
    CenterWindow();
 
    BringWindowToTop();
 
    if (::GetParent(m_hWnd) == NULL)
    {
      ::ShowWindow(m_hWnd, SW_MINIMIZE);
      ::ShowWindow(m_hWnd, SW_RESTORE);
    }
 
    // nothing change in TESTICON
    GetDlgItem(TESTICON).SetIcon(::LoadIcon(NULL, IDI_INFORMATION));
 
    return 1;  // Let the system set the focus
}

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blancx
Asked:
blancx
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1 Solution
 
pgnatyukCommented:
Just in case - add UpdateWindow or Invalidate.
You actually redraw the window here (or deactivate and then activate):
    if (::GetParent(m_hWnd) == NULL)
    {
      ::ShowWindow(m_hWnd, SW_MINIMIZE);
      ::ShowWindow(m_hWnd, SW_RESTORE);
    }
 and then load the icon. why?
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blancxAuthor Commented:
Regarding the code you mention, It is just the testing code that I forgot to remove.

I have tried to put UpdateWindow or Invalidate function at the end of OnInitDialog(). Nothing changed.

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pgnatyukCommented:
So check that LoadIcon brings the icon for you.  You can just draw the icon in the client area from OnPaint.
Check that your dialog has the style to redraw the child windows. Check the control
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pgnatyukCommented:
I had to do a short test - just an MFC app with aboutbox - there is the icon in the style you need. I just removed the icon resource name on the about box dialog resource and loaded the icon manually as you did. Of course I didn't see the icon - just reproduced your question.
So I just added (CStatic*) before GetDlgItem:
((CStatic*)GetDlgItem(TESTICON))->SetIcon(hIcon);
the hIcon I loaded before as AfxGetApp()->LoadIcon(IDR_MAINFRAME);
Now I see the icon on the dialog.
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blancxAuthor Commented:
I think it is a solution but I can't use CStatic in my ATL dialog.
There are link errors when I try to include "Afxwin.h".

In order to minimize the side effect, I send STM_SETICON via SendMessage(). It also change the icon.
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