Changing the Color of Edit and Combobox Controls in ATL

Simply follow these steps in order to change the color of the Edit control or Combobox control in ATL.
  1. Add a handler for WM_CTLCOLOREDIT
    MESSAGE_HANDLER(WM_CTLCOLOREDIT, OnCtlColorEdit)
    
  2. Implementation of the handler, return the brush that u want to use to color the control
    LRESULT OnCtlColorEdit(UINT uMsg, 
                           WPARAM wParam, 
                           LPARAM lParam,
                           BOOL& bHandled)
    {
     HDC hdcEdit = (HDC) wParam;    // handle to display context 
     HWND hwndEdit = (HWND) lParam; // handle to static control 
    
     if (( hwndEdit == GetDlgItem(IDC_EDIT) 
     || ( hwndEdit == GetDlgItem(IDC_COMBO))
     {
      // m_hBrush is an instance variable that stores the
      // current Color brush. If this is the first time through
      // we need to create it. The brush is deleted in the destructor
      if ( m_hBrush == NULL )
       m_hBrush = CreateSolidBrush( RGB(255,0,0)
     )
     
      // Get the DC provided and set the appropriate attributes
     
      SetBkMode(hdcEdit, TRANSPARENT );
      SetBkColor(hdcEdit, RGB(255,0,0));
    
      // Return a handle to the brush
      HBRUSH far* hbr = (HBRUSH far*) m_hBrush;
      return ((DWORD) hbr);
     }
     return 0;
    }
    


Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Do you spend a lot of time thinking about your enemies? Attacker attribution - figuring out who's out to get you - is one of the most important things an organization can do to protect itself.  Because you have no hope of defending yourself if you don't understand who the attackers are. Good news? Every organization isn't targeted by all the attackers. Bad news? No one can identify your potential attackers as well as you. Read this graphics-rich threat summary for 2014 to determine who might be your next …

  • What does it take to win? According to Jack Welch, winning in business is great because when companies win, people thrive and grow. However, it goes without saying that you have to win the right way -- cleanly and by the rules. Even the most talented businessperson with the best intentions will get nowhere unless he or she knows how to win in today's complex business world. Read this book summary to learn not only the strategies of winning, but also the value that those strategies bring to your professional …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date