Change ICON of Picture Control

Posted on 2009-07-03
Last Modified: 2013-11-20
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.
    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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Question by:blancx
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LVL 33

Expert Comment

ID: 24772690
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?

Author Comment

ID: 24782272
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.

LVL 33

Expert Comment

ID: 24782406
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
LVL 33

Accepted Solution

pgnatyuk earned 250 total points
ID: 24782604
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:
the hIcon I loaded before as AfxGetApp()->LoadIcon(IDR_MAINFRAME);
Now I see the icon on the dialog.

Author Comment

ID: 24782964
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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