如何将CStatic控件的背景色设为透明呢？

Question

如何将CStatic控件的背景色设为透明呢，在对话框中

Answer 1

从CStatic类派生自己类，重载ON_WM_CTLCOLOR_REFLECT()。需要现成的可以告诉我Mail，我发给你
或者你到网上搜索一下！

Answer 2

参考代码：
//头文件
/*===========================================================================
====                                                                     ====
====    File name           :  StaticTrans.h                             ====
====    Creation date       :  7/10/2001                                 ====
====    Author(s)           :  Dany Cantin                               ====
====                                                                     ====
===========================================================================*/#ifndef STATICTRANS_H
#define STATICTRANS_H#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
/////////////////////////////////////////////////////////////////////////////
// CStaticTrans window#define TRANS_BACK -1class CStaticTrans : public CStatic
{
    // Construction
public:
    CStaticTrans();
    
private:
    COLORREF m_TextColor;
    COLORREF m_BackColor;
    CBrush   m_Brush;
    
// Operations
public:
    void SetTextColor(COLORREF col) { m_TextColor = col;
                                      UpdateCtrl();      }
    void SetBackColor(COLORREF col) { m_BackColor = col;
                                      UpdateCtrl();      }private:
    void UpdateCtrl();
    
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CStaticTrans)
//}}AFX_VIRTUAL// Implementation
public:
virtual ~CStaticTrans(); // Generated message map functions
protected:
//{{AFX_MSG(CStaticTrans)
afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);
//}}AFX_MSG DECLARE_MESSAGE_MAP()
};
#endif // STATICTRANS_H

Answer 3

//CPP文件
/*===========================================================================
====                                                                     ====
====    File name           :  StaticTrans.cpp                           ====
====    Creation date       :  7/10/2001                                 ====
====    Author(s)           :  Dany Cantin                               ====
====                                                                     ====
===========================================================================*/#include "stdafx.h"
#include "StaticTrans.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CStaticTransCStaticTrans::CStaticTrans()
{
    m_TextColor = RGB(0, 0, 0);
    m_BackColor = TRANS_BACK;    
}CStaticTrans::~CStaticTrans()
{
}
BEGIN_MESSAGE_MAP(CStaticTrans, CStatic)
//{{AFX_MSG_MAP(CStaticTrans)
ON_WM_CTLCOLOR_REFLECT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CStaticTrans message handlersHBRUSH CStaticTrans::CtlColor(CDC* pDC, UINT nCtlColor) 
{
    m_Brush.DeleteObject();
    
    if (m_BackColor == TRANS_BACK) {
        m_Brush.CreateStockObject(HOLLOW_BRUSH);
        pDC->SetBkMode(TRANSPARENT);
    }
    else {
        m_Brush.CreateSolidBrush(m_BackColor);
        pDC->SetBkColor(m_BackColor);
    }
    
    pDC->SetTextColor(m_TextColor);
    
    return (HBRUSH)m_Brush;
}void CStaticTrans::UpdateCtrl()
{
    CWnd* pParent = GetParent();
    CRect rect;
    
    GetWindowRect(rect);
    pParent->ScreenToClient(rect);
    rect.DeflateRect(2, 2);
    
    pParent->InvalidateRect(rect, FALSE);    
}

Answer 4

楼上的都太复杂了
只要重载一下窗体的WM_CTLCOLOR事件，然后加入如下代码即可
//Set Static Control BackGround Transparent
if(nCtlColor==CTLCOLOR_STATIC)
pDC->SetBkMode(TRANSPARENT);
return hbr;
注意要在设计时将static的风格设为simple

Answer 5

pDC->SetBkMode(TRANSPARENT)就够了

Answer 6

重载WM_CTLCOLOR
pDC->SetBkMode(TRANSPARENT)

Answer 7

重载一下窗体的WM_CTLCOLOR事件，然后加入如下代码
pDC->SetBkMode(TRANSPARENT);
return hbr;
注意要在设计时将static的风格设为simple更改Static的内容时，要加InvalidateRect 对应static的位置

Answer 8

重载WM_CTLCOLOR，同时将static的属性设置为TRANSPARENT
HBRUSH CDialog2::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

// TODO: Change any attributes of the DC here //////////////////////
// 静态文本控件透明
//////////////////////
if(pWnd->GetDlgCtrlID() == IDC_STATIC)  // 需要设置透明背景的static控件的id
 {
pDC->SetBkMode(TRANSPARENT);
pDC->SetTextColor(RGB(0,0,0));//此处设置字体的颜色
 
        return  HBRUSH(GetStockObject(HOLLOW_BRUSH));
 }
///////////////////
// 结束添加
///////////////////

// TODO: Return a different brush if the default is not desired
return hbr;
}