VS2012 MFC 制作透明按钮

[Janewho]

本来听说可以用GDI，然后参照http://blog.csdn.net/zhongbin104/article/details/8730935，很荣幸地失败了。
又看到说有这样的函数void DrawTransparent(BOOL bRepaint = FALSE);但是用在对话框。。。表示我的是CFORVIEW的单文档。

请问上面两种方法能不能修改后可行呢？或者其他办法？
要简单的，越简单越好，我几天前刚接触MFC，复杂了我不懂，其实简单的可能也不懂。。。。

​我最想要的效果其实是按钮上还有透明的图片，就是要有透明小图标加文字。如果可以不太复杂就实现或者简单改改代码就能实现的话就好了。

[BrillianceRen]

CButtonST

[lx624909677]

重绘button，头文件如下：
#pragma once


// CMyButton

class CMyButton : public CButton
{
DECLARE_DYNAMIC(CMyButton)

public:
CMyButton();
virtual ~CMyButton();
public:
void SetBkColor(COLORREF color);
void SetTextColor(COLORREF color);
private:
bool m_bOver;
bool m_bDown;
bool m_bDisable;
bool m_bTracking;
COLORREF m_bkColor;
COLORREF m_textColor;
protected:
DECLARE_MESSAGE_MAP()
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
virtual void PreSubclassWindow();
public:
virtual void DrawItem(LPDRAWITEMSTRUCT /*lpDrawItemStruct*/);
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
afx_msg LRESULT OnMouseLeave(WPARAM wParam, LPARAM lParam);
afx_msg LRESULT OnMouseHover(WPARAM wParam, LPARAM lParam);
afx_msg void OnEnable(BOOL bEnable);
private:
void ButtonInit();
void DrawButton();
void DrawButton(HDC hDestDC);
};


cpp文件如下
// MyButton.cpp : 实现文件
//

#include "stdafx.h"
#include "AlphaButton.h"
#include "MyButton.h"
#include "MainDlg.h"

// CMyButton

IMPLEMENT_DYNAMIC(CMyButton, CButton)

CMyButton::CMyButton()
{
m_bkColor=0xFFFFFF;
m_textColor=0x000000;
}

CMyButton::~CMyButton()
{
}


BEGIN_MESSAGE_MAP(CMyButton, CButton)
ON_WM_MOUSEMOVE()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)
ON_MESSAGE(WM_MOUSEHOVER, OnMouseHover)
ON_WM_ENABLE()
END_MESSAGE_MAP()



// CMyButton 消息处理程序

void CMyButton::SetBkColor(COLORREF color)
{
m_bkColor=color;
}
void CMyButton::SetTextColor(COLORREF color)
{
m_textColor=color;
}

BOOL CMyButton::PreCreateWindow(CREATESTRUCT& cs)
{
BOOL bRet=CButton::PreCreateWindow(cs);
ButtonInit();
return bRet;
}

void CMyButton::PreSubclassWindow()
{
CButton::PreSubclassWindow();
ButtonInit();
}
void CMyButton::ButtonInit()
{
m_bTracking=false;
m_bOver=m_bDown=m_bDisable=false;
m_bDisable=IsWindowEnabled()?FALSE:TRUE;
ModifyStyle(NULL,BS_OWNERDRAW);
}

void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{

DrawButton(lpDrawItemStruct->hDC);
}

void CMyButton::OnMouseMove(UINT nFlags, CPoint point)
{
if (!m_bTracking)
{
m_bOver = TRUE;
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.hwndTrack = m_hWnd;
tme.dwFlags = TME_LEAVE | TME_HOVER;
tme.dwHoverTime = 50;
m_bTracking = (bool)_TrackMouseEvent(&tme);
}

CButton::OnMouseMove(nFlags, point);
}

void CMyButton::OnLButtonDown(UINT nFlags, CPoint point)
{
m_bDown=TRUE;

CButton::OnLButtonDown(nFlags, point);
}

void CMyButton::OnLButtonUp(UINT nFlags, CPoint point)
{
m_bDown=FALSE;
CButton::OnLButtonUp(nFlags, point);
}
LRESULT CMyButton::OnMouseLeave(WPARAM wParam, LPARAM lParam)
{
m_bOver = FALSE;
m_bTracking = FALSE;
m_bDown=FALSE;
InvalidateRect(NULL, FALSE);
return 0;
}

LRESULT CMyButton::OnMouseHover(WPARAM wParam, LPARAM lParam)
{
m_bOver = TRUE;
InvalidateRect(NULL);
return 0;
}
void CMyButton::DrawButton()
{
HDC hDC=::GetDC(m_hWnd);
DrawButton(hDC);
::ReleaseDC(m_hWnd,hDC);
}
void CMyButton::DrawButton(HDC hDestDC)
{
CRect rc;
GetClientRect(rc);
int nWindth=rc.Width();
int nHeight=rc.Height();
HDC hDC=CreateCompatibleDC(hDestDC);//创建兼容DC,采用双缓冲画出
HDC hMaskDC=CreateCompatibleDC(hDestDC);
HBITMAP hBitmap=CreateCompatibleBitmap(hDestDC,nWindth,nHeight);
HBITMAP hMaskBitmap=CreateCompatibleBitmap(hDestDC,nWindth,nHeight);
HBITMAP hOldBitmap=(HBITMAP)SelectObject(hDC,hBitmap);
HBITMAP hOldMaskBitmap=(HBITMAP)SelectObject(hMaskDC,hMaskBitmap);
SetBkMode(hDC,TRANSPARENT);

//把父窗口的背景图复制到按钮的DC上,实现视觉透明----------------
CMainDlg* pParent=(CMainDlg*)GetParent();
CPoint pt(0,0);
MapWindowPoints(pParent,&pt,1);
pParent->m_bkImage.BitBlt(hDC,rc,pt,SRCCOPY);


//-------------------------------------------------------------
int nAlpha=100;//0--255
int nOffset=0;

HBRUSH hbr=CreateSolidBrush(m_bkColor);
FillRect(hMaskDC,&rc,hbr);
DeleteObject(hbr);

if(m_bDisable){
nAlpha=100;
}else if(m_bDown){
nAlpha=180;
nOffset=1;
}else if(m_bOver){
nAlpha=150;
}else{
nAlpha=100;
}
BLENDFUNCTION blend;
memset( &blend, 0, sizeof( blend) );
blend.BlendOp= AC_SRC_OVER;
blend.SourceConstantAlpha= nAlpha; // 透明度 最大255

HRGN hRgn=CreateRoundRectRgn(0,0,nWindth,nHeight,3,3);
SelectClipRgn (hDC,hRgn);
AlphaBlend (hDC,0,0,nWindth,nHeight,hMaskDC, 0,0,nWindth,nHeight,blend);

CString strText;
GetWindowText(strText);
if(strText!=_T("")){
rc.InflateRect(-2,-2);
rc.OffsetRect(nOffset,nOffset);
HFONT hFont=(HFONT)SendMessage(WM_GETFONT);
if(!hFont)hFont=(HFONT)GetStockObject(DEFAULT_GUI_FONT);
HFONT hOldFont=(HFONT)SelectObject(hDC,hFont);
::SetTextColor(hDC,m_textColor);
::DrawText(hDC,strText,-1,&rc,DT_SINGLELINE|DT_CENTER|DT_VCENTER|DT_WORD_ELLIPSIS);
::SelectObject(hDC,hOldFont);
}
SelectClipRgn (hDC,NULL);
DeleteObject(hRgn);
//复制到控件的DC上------------------------
BitBlt(hDestDC,0,0,nWindth,nHeight,hDC,0,0,SRCCOPY);
//删除资源,释放内存-----------------------
SelectObject(hDC,hOldBitmap);
DeleteObject(hBitmap);
DeleteDC(hDC);
SelectObject(hMaskDC,hOldMaskBitmap);
DeleteObject(hMaskBitmap);
DeleteDC(hMaskDC);

}
void CMyButton::OnEnable(BOOL bEnable)
{
CButton::OnEnable(bEnable);
m_bDisable=IsWindowEnabled()?FALSE:TRUE;
DrawButton();
}

[rxguoblp]

不要自己写了，就去下一个CButtonST类吧，顺便下一个说明书，照着说明书使用即可

[tg2003]

试试GDI+

[向立天]

您好 我是本版版主 此帖已多日无人关注 请您及时结帖 如您认为问题没有解决可按无满意结帖处理 另外本版设置了疑难问题汇总帖 并已在版面置顶 相关规定其帖子中有说明 您可以根据规定提交您帖子的链接 如您目前不想结帖只需回帖说明 我们会删除此结帖通知 见此回复三日内无回应 我们将强制结帖 相关规定详见界面界面版关于版主结帖工作的具体办法