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Changing the Color of Edit and Combobox Controls in ATL

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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

  • Changes BkColor and TextColor of 2 different comboboxes edit control

    Posted by Aparna on 08/31/2015 04:34am

    If We have 1 Combobox then We can change Background color and TExtColor easily For Example: case WM_CTLCOLOREDIT: SelectObject((HDC)wParam, hFont); SetTextColor((HDC)wParam, RGB(255, 0, 0)); SetBkColor((HDC) wParam,RGB(255,206, 129)); return (LRESULT) (HBRUSH)CreateSolidBrush(RGB(255,206, 129));

    Reply
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