MFC 按钮怎么变色

Question

如题，让一个按钮变成红色或者绿色 最好有代码

Answer 1

http://hi.baidu.com/fox000002/blog/item/0c2892091fba44206a60fb72.html

Answer 2

http://www.codeguru.com/cpp/controls/buttonctrl/article.php/c5169/Colored-Buttons.htm

Answer 3

if(button_id == 1)
{
RECT m_rect;
m_button3.GetClientRect(&m_rect); static bool b = false;   
CBrush bru(RGB(255,0,0));   
CPaintDC *dc;
dc=(CPaintDC*)m_button3.GetDC();   
   
CString str;   
GetDlgItemText(IDC_BUTTON1,str);   
dc->SetBkMode(TRANSPARENT);    if(b==false)   
{   
dc->FillRect(&m_rect,&bru);   
dc->DrawText(str,&m_rect,DT_CENTER | DT_SINGLELINE | DT_VCENTER );   
b=true;   
return;   
}
}

Answer 4

MSDN上的代码// NOTE: CMyButton is a class derived from CButton. The CMyButton
// object was created as follows:
//
// CMyButton myButton;
// myButton.Create(_T("My button"), 
//      WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON|BS_OWNERDRAW, 
//      CRect(10,10,100,30), pParentWnd, 1);
//// This example implements the DrawItem method for a CButton-derived 
// class that draws the button's text using the color red.
void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
   UINT uStyle = DFCS_BUTTONPUSH;   // This code only works with buttons.
   ASSERT(lpDrawItemStruct->CtlType == ODT_BUTTON);   // If drawing selected, add the pushed style to DrawFrameControl.
   if (lpDrawItemStruct->itemState & ODS_SELECTED)
      uStyle |= DFCS_PUSHED;   // Draw the button frame.
   ::DrawFrameControl(lpDrawItemStruct->hDC, &lpDrawItemStruct->rcItem, 
      DFC_BUTTON, uStyle);   // Get the button's text.
   CString strText;
   GetWindowText(strText);   // Draw the button text using the text color red.
   COLORREF crOldColor = ::SetTextColor(lpDrawItemStruct->hDC, RGB(255,0,0));
   ::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(), 
      &lpDrawItemStruct->rcItem, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
   ::SetTextColor(lpDrawItemStruct->hDC, crOldColor);
}