更改对话框的背景颜色 mfc [英] change the background color of a dialog box mfc

问题描述

我正在尝试更改对话框的背景颜色(win 7、vs2010、c++).我试图捕捉 WM_CTLCOLOR ，WM_ERASEBKGND 并改变颜色.我设法以这种方式更改背景颜色，但是当窗口完成上传时，颜色恢复为默认值，但我注意到框架的颜色正确.我认为我正在更改窗口而不是对话框或类似的东西.我用 WTL(不是 AFX)来做这个.

I'm trying to change the background color of a dialog box (win 7, vs2010,c++). I tried to catch WM_CTLCOLOR ,WM_ERASEBKGND and change the color. I manged to change in this way the backgroung color, but when the window is finish to upload itself, the color is back to default but I noticed that the frame is in the right color. I think that I'm changing the window and not the dialog box or something like that. I'm doing this with WTL (not AFX).

我该怎么办?

推荐答案

试试这个:

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
    CAboutDlg();

// Dialog Data
    //{{AFX_DATA(CAboutDlg)
    enum { IDD = IDD_ABOUTBOX };
    //}}AFX_DATA

    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CAboutDlg)
    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
    //}}AFX_VIRTUAL

// Implementation
protected:
    //{{AFX_MSG(CAboutDlg)
    //}}AFX_MSG
    afx_msg BOOL OnEraseBkgnd(CDC* pDC);
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
    //{{AFX_DATA_INIT(CAboutDlg)
    //}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CAboutDlg)
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
    //{{AFX_MSG_MAP(CAboutDlg)
    ON_WM_ERASEBKGND()
    //}}AFX_MSG_MAP

END_MESSAGE_MAP()




BOOL CAboutDlg::OnEraseBkgnd(CDC* pDC)
{
    CRect rect;
    GetClientRect(&rect);
    CBrush myBrush(RGB(255, 255, 255));    // dialog background color
    CBrush *pOld = pDC->SelectObject(&myBrush);
    BOOL bRes  = pDC->PatBlt(0, 0, rect.Width(), rect.Height(), PATCOPY);
    pDC->SelectObject(pOld);    // restore old brush
    return bRes;                       // CDialog::OnEraseBkgnd(pDC);
}

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