Pelles C forum

C language => Expert questions => Topic started by: tbohon on April 16, 2010, 07:50:20 PM

Title: Background Color on Dialog
Post by: tbohon on April 16, 2010, 07:50:20 PM

I continue to learn and have managed to answer/resolve my previous questions PLUS I figured out how to use the Windows clipboard (easier than I thought it would be, actually).

Right now I'm wrestling with figuring out a way to change the background color on my dialog box and am going nowhere rapidly.  I'll continue searching in my 'spare' time but was wondering if a guru here could point out what I'm doing wrong in the code fragment below ...

Code: [Select]

/****************************************************************************
 *                                                                          *
 * Function: WinMain                                                        *
 *                                                                          *
 * Purpose : Initialize the application.  Register a window class,          *
 *           create and display the main window and enter the               *
 *           message loop.                                                  *
 *                                                                          *
 * History : Date      Reason                                               *
 *           00/00/00  Created                                              *
 *                                                                          *
 ****************************************************************************/

int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
    INITCOMMONCONTROLSEX icc;
    WNDCLASSEX wcx;

    ghInstance = hInstance;

    HBRUSH mybrush = CreateSolidBrush((COLORREF) RGB (255,255,255) );

    /* Initialize common controls. Also needed for MANIFEST's */
    icc.dwSize = sizeof(icc);
    icc.dwICC = ICC_WIN95_CLASSES /*|ICC_COOL_CLASSES|ICC_DATE_CLASSES|ICC_PAGESCROLLER_CLASS|ICC_USEREX_CLASSES|... */;
    InitCommonControlsEx(&icc);

    /* Get system dialog information */
    wcx.cbSize = sizeof(wcx);
    if (!GetClassInfoEx(NULL, MAKEINTRESOURCE(32770), &wcx))
        return 0;

    /* Add our own stuff */
    wcx.hInstance = hInstance;
    wcx.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDR_ICO_MAIN));
    wcx.lpszClassName = _T("win1Class");
wcx.hbrBackground = mybrush;
    if (!RegisterClassEx(&wcx))
        return 0;

    /* The user interface is a modal dialog box */
    return DialogBox(hInstance, MAKEINTRESOURCE(DLG_MAIN), NULL, (DLGPROC)MainDlgProc);
}


Any hints appreciated - again I learn best by being pointed toward the answer and then left to figure it out on my own.

Tnx in advance.

Tom

Title: Re: Background Color on Dialog
Post by: DMac on April 19, 2010, 07:05:35 PM

Tom,

Here's a little one off demo I just threw together.

The dialog based project behaves differently then the window based.  This is because the dialog's processes, including drawing, are handled by windows internally in a standard way.  There is a way to override the default painting of background and text however, and that is what the attached project demonstrates.  As a bonus I threw in some code for the choose color dialog so that you could play around with it.

Regards,
DMac

Title: Re: Background Color on Dialog
Post by: tbohon on April 20, 2010, 03:39:08 AM

Thank you kind sir ... greatly appreciated!

Best,

Tom