VC为控件添加背景

为对话框添加背景图片

1.将要添加的图片经PS或画图工具，另存为位图（bmp）,并在MFC中引入该BITMAP资源，ID为IDB_BITMAP1；

2.在该Dialog的OnPaint（）函数中，添加如下代码：

  CPaintDC dc(this);
  CRect rect;
  GetClientRect(&rect);
  CDC dcMem;
  dcMem.CreateCompatibleDC(&dc);
  CBitmap bmpBackground;
  bmpBackground.LoadBitmap(IDB_BITMAP1);
  BITMAP bitmap;
  bmpBackground.GetBitmap(&bitmap);
  CBitmap *pbmpOld=dcMem.SelectObject(&bmpBackground);
  dc.StretchBlt(0,0,rect.Width(),rect.Height(),&dcMem,0,0,bitmap.bmWidth,bitmap.bmHeight,SRCCOPY);

//若该对话框为主框，则在OnPaint（）函数中if...else...语句中的else中添加以上代码；

为控件设置背景颜色

1.为控件所在对话框的类添加CBrush类型的变量，例如m_Brush；

在该对话框的构造函数中，创建一个画刷，例如：

CDeleteFace::CDeleteFace(CWnd* pParent )
: CDialog(CDeleteFace::IDD, pParent)
{
//{{AFX_DATA_INIT(CDeleteFace)
m_edit1 = _T("");
//}}AFX_DATA_INIT
m_brush.CreateSolidBrush(RGB(200,230,190));
}

为该对话框添加OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 函数：

在OnCtlColor中添加如下代码：

if (pWnd->GetDlgCtrlID()==IDC_EDIT1||pWnd->GetDlgCtrlID()==IDC_STATIC)
{
pDC->SetBkMode(TRANSPARENT);
return m_brush;
}

Begin---重载 OnCtrlColor.
HBRUSH CMyDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

if(nCtlColor == CTLCOLOR_DLG || nCtlColor == CTLCOLOR_STATIC)
{
  //pDC->SetTextColor(RGB(0,0,255));//字体色
  pDC->SetBkColor(RGB(210,230,211));//字体背景色******
  HBRUSH B = CreateSolidBrush(RGB(210,230,211)); //背景色
  return B;
}
if(nCtlColor == CTLCOLOR_EDIT)
{
  pDC->SetTextColor(RGB(0,0,255));//字体色
}

return hbr;
}

即可完成对控件的颜色设置！

End-----

2.上述方法对Button控件不适用；可用以下方法为Button控件设置背景：

（1）.先将Button的Styles设置为owner draw，再在OnInitDialog中加入代码：
((CBitmapButton *)GetDlgItem(IDC_BUTTON1))->LoadBitmaps(IDB_BITMAP)

（2）.为工程添加类CSXBtn，基类为CButton，为CSXBtn添加虚函数DrawItem（），完成对Button控件背景、字体颜色的设置；

代码如下：

void CSXBtn::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
UINT uStyle = BS_DEFPUSHBUTTON ;//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);

CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);

// Get the button's text.
CString strText;
GetWindowText(strText);

// Draw the button text using the text color red.
CBrush B;
CRect rect;
CRect focusRect;
focusRect.CopyRect(&lpDrawItemStruct->rcItem);
DrawFocusRect(lpDrawItemStruct->hDC, (LPRECT)&focusRect);
focusRect.left += 4;
focusRect.right -= 4;
focusRect.top += 4;
focusRect.bottom -= 4;

rect.CopyRect(&lpDrawItemStruct->rcItem);
pDC->Draw3dRect(rect, ::GetSysColor(COLOR_BTNSHADOW), ::GetSysColor(COLOR_BTNHILIGHT));
B.CreateSolidBrush(RGB(200,230,190));
::FillRect(lpDrawItemStruct->hDC,&rect, (HBRUSH)B.m_hObject);
::SetBkMode(lpDrawItemStruct->hDC,TRANSPARENT);
COLORREF crOldColor = ::SetTextColor(lpDrawItemStruct->hDC, RGB(0,0,0));
::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
  &lpDrawItemStruct->rcItem, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
::SetTextColor(lpDrawItemStruct->hDC, crOldColor);
}

将Button控件属性中“所有者绘制”选中，并为控件添加变量，变量类型为CSXBtn；即可！