How to change the background color of form using C++ - 如何用C++改变窗体的颜色

纪飞 Jackie

于 2009-02-14 22:38:00 发布

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分类专栏： C++ C Visual C++ 6.0 文章标签： c++ attributes function c

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本文介绍了在MFC应用程序中实现窗体背景色绘制的三种方法：使用CPaintDC直接填充、通过InitInstance设置背景色及在OnCtlColor中返回画刷对象。这些方法适用于需要定制窗口背景色的应用场景。

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1、Method 1：Use CPaintDC

bool CPrjDrawColorOnFormTestDlg::DrawColorOnForm() { CPaintDC dc(this); RECT rect; GetClientRect(&rect); dc.FillSolidRect(&rect,RGB(255,0,0)); return true; }

2、Method 2：Use the SetDialogBkColor function in the InitInstance function

BOOL CPrjProcessManagerApp::InitInstance() { //===================================================================================== //TODO: Change the window's background/Foreground color m_lColorBackGround = GetPrivateProfileInt("prjProcessManager","ColorBackGround",8421504,"c://prjProcessManager.ini"); m_lColorForeGround = GetPrivateProfileInt("prjProcessManager","ColorForeGround",16711680,"c://prjProcessManager.ini"); SetDialogBkColor(m_lColorBackGround,m_lColorForeGround); //================================================================= ... ... ... ... ... return FALSE; }

3、Method 3：return a CBrush in the OnCtlColor function

HBRUSH CPrjDrawColorOnFormTestDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); // TODO: Change any attributes of the DC here m_brush.CreateSolidBrush(RGB(100,100,100)); // TODO: Return a different brush if the default is not desired //return hbr; return m_brush; }