关于三台按钮的问题

[G1398256223]

小弟做了一个三态按钮的类，根据贴的图的不同分成ICON和BITMAP。通过CButtonEx()、LoadButtonIcon()、LoadButtonBitmap()加载贴图。重载DrawItem()来实现贴图。但是用BITMAP贴的图是一片空白，这是怎么回事？还有，这个类好像没有响应WM_LBUTTONUP啊。

BITMAP 贴图代码：

this->SetBitmap((HBITMAP)A.GetSafeHandle());

以下是全部代码：
CButtonEx.h

#pragma once
#include "stdafx.h"
#include "resource.h"

#ifndef CBUTTONEX_
#define CBUTTONEX_
class CButtonEx :public CButton
{
public:
	CButtonEx();
	CButtonEx(UINT hIcon,bool isIconIc);
	CButtonEx(UINT hIconU,UINT hIconD,UINT hIconF,UINT hIconDs,bool isIconIc);

	~CButtonEx();

public:
	void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	int LoadButtonIcon(UINT IconId);
	int LoadButtonIcon(UINT IconIdu,UINT IconIdd,UINT IconIdf,UINT IconIdds);
	int LoadButtonBitmap(UINT IconIdu,UINT IconIdd,UINT IconIdf,UINT IconIdds);
	int DisableButton();
	int UnDisableButton();
	bool IsDisable();

private:
	bool b,isDisable;
	HICON Icon1,Icon2,Icon3,Icon4;
	CBitmap A,B,C,D;
	bool isIconIc;

	virtual afx_msg void OnMouseHover(UINT nFlags,CPoint point);
	virtual afx_msg void OnMouseLeave();
	virtual afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	virtual afx_msg void OnLButtonDown(UINT nFlags,CPoint point);
	virtual afx_msg void OnLButtonUp(UINT nFlags,CPoint point);
	virtual afx_msg void OnPaint();
	DECLARE_MESSAGE_MAP()
};
#endif

CButtonEx.cpp

#include "stdafx.h"
#include "CButtonEx.h"


BEGIN_MESSAGE_MAP(CButtonEx,CButton)
	ON_WM_MOUSELEAVE()
	ON_WM_MOUSEMOVE()
	ON_WM_MOUSEHOVER()
	ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()

CButtonEx::~CButtonEx()
{
	CObject::~CObject();
}
void CButtonEx::OnMouseHover(UINT nFlags, CPoint point)
{
	if(isIconIc==true){
		LPRECT rect=new RECT;
		this->GetClientRect(rect);
		CClientDC dc(this);
		DrawIconEx (dc.GetSafeHdc(),0,0,Icon3,\
			rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
	}
	else this->SetBitmap((HBITMAP)C.GetSafeHandle());
}
void CButtonEx::OnMouseLeave()
{
	if(isIconIc==true){
		LPRECT rect=new RECT;
		this->GetClientRect(rect);
		CClientDC dc(this);
		DrawIconEx (dc.GetSafeHdc(),0,0,Icon1,\
		rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
	}
	else this->SetBitmap((HBITMAP)A.GetSafeHandle());

	b=false;
}
CButtonEx::CButtonEx()
{	
   	b=false;
	isIconIc=true;
}
void CButtonEx::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
	if(isIconIc==true){
		LPRECT rect=new RECT;
		this->GetClientRect(rect);
		CClientDC dc(this);
		DrawIconEx (dc.GetSafeHdc(),0,0,Icon1,\
			rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
	}
	else this->SetBitmap((HBITMAP)A.GetSafeHandle());

}

void CButtonEx::OnMouseMove(UINT nFlags, CPoint point)
{
	if(b==false){
		TRACKMOUSEEVENT tme;
tme.cbSize =sizeof( tme);
tme.dwFlags =TME_LEAVE | TME_HOVER;
tme.dwHoverTime = HOVER_DEFAULT;
tme.hwndTrack =m_hWnd;
	::TrackMouseEvent( &tme);
b=true;
	}
}
void CButtonEx::OnLButtonDown(UINT nFlags,CPoint point)
{
	if(isIconIc==true){
		LPRECT rect=new RECT;
		this->GetClientRect(rect);
		CClientDC dc(this);
		DrawIconEx (dc.GetSafeHdc(),0,0,Icon2,\
		rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
		}
	else this->SetBitmap((HBITMAP)B.GetSafeHandle());
}
void CButtonEx::OnPaint()
{
	if(isDisable==true){
		if(isIconIc==true){
			LPRECT rect=new RECT;
			this->GetClientRect(rect);
			CClientDC dc(this);
			DrawIconEx (dc.GetSafeHdc(),0,0,Icon4,\
			rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
			}
		else this->SetBitmap((HBITMAP) D.GetSafeHandle());
	}
	else{
		if(isIconIc==true){
			LPRECT rect=new RECT;
			this->GetClientRect(rect);
			CClientDC dc(this);
			DrawIconEx (dc.GetSafeHdc(),0,0,Icon1,\
			rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);
			}
		else this->SetBitmap((HBITMAP)A.GetSafeHandle());
	}
}
CButtonEx::CButtonEx(UINT hIcon,bool isIconIc)
{
	b=false;
	if(isIconIc==true){Icon1=AfxGetApp()->LoadIconA(hIcon);this->isIconIc=true;}
	else A.LoadBitmapA(hIcon);
}
CButtonEx::CButtonEx(UINT hIconU,UINT hIconD,UINT hIconF,UINT hIconDs,bool isIconIc)
{
	b=false;
	if(isIconIc==true){this->isIconIc=true;
		if(hIconU==NULL) { TRACE0("error #1 hIconU is NULL!"); ExitProcess(0);}
		Icon1=AfxGetApp()->LoadIconA(hIconU);
		if(hIconD!=NULL){ Icon2=AfxGetApp()->LoadIconA(hIconD);}
		if(hIconF!=NULL){Icon3=AfxGetApp()->LoadIconA(hIconF);}
		if(hIconDs!=NULL){ Icon4=AfxGetApp()->LoadIconA(hIconDs);}}
	else {
		if(hIconU==NULL) { TRACE0("error #1 hIconU is NULL!"); ExitProcess(0);}
		A.LoadBitmapA(hIconU);
		if(hIconD!=NULL){ B.LoadBitmapA(hIconD);}
		if(hIconF!=NULL){C.LoadBitmapA(hIconF);}
		if(hIconDs!=NULL){ D.LoadBitmapA(hIconDs);}
	}

}
int CButtonEx::LoadButtonIcon(UINT IconId)
{
	try{Icon1=AfxGetApp()->LoadIconA(IconId);}
	catch(...){return -1;}
	isIconIc=true;
	return 0;
}
int CButtonEx::LoadButtonBitmap(UINT IconIdu,UINT IconIdd,UINT IconIdf,UINT IconIdds)
{
		if(IconIdu==NULL) { TRACE0("error #1 hIconU is NULL!"); ExitProcess(0);}
		A.LoadBitmapA(IconIdu);
		if(IconIdd!=NULL){ B.LoadBitmapA(IconIdd);}
		if(IconIdf!=NULL){C.LoadBitmapA(IconIdf);}
		if(IconIdds!=NULL){ D.LoadBitmapA(IconIdds);}
		isIconIc=false;
		return 0;
}
int CButtonEx::LoadButtonIcon(UINT IconIdu,UINT IconIdd,UINT IconIdf,UINT IconIdds)
{
	try{
		if(IconIdu==NULL) { TRACE0("error #1 hIconU is NULL!"); ExitProcess(0);}
		Icon1=AfxGetApp()->LoadIconA(IconIdu);
		if(IconIdd!=NULL){ Icon2=AfxGetApp()->LoadIconA(IconIdd);}
		if(IconIdf!=NULL){Icon3=AfxGetApp()->LoadIconA(IconIdf);}
		if(IconIdds!=NULL){ Icon4=AfxGetApp()->LoadIconA(IconIdds);}
	}
	catch(...){return -1;}
	isIconIc=true;
	return 0;
}
void CButtonEx::OnLButtonUp(UINT nFlags,CPoint point)
{
	if(isIconIc==true){
	LPRECT rect=new RECT;
	this->GetClientRect(rect);
	CClientDC dc(this);
	DrawIconEx (dc.GetSafeHdc(),0,0,Icon1,\
		rect->right-rect->left,rect->bottom-rect->top,0,0,DI_NORMAL);}
	else this->SetBitmap((HBITMAP)A.GetSafeHandle());
}

int CButtonEx::DisableButton()
{
	isDisable=true;
	return 0;
}
int CButtonEx::UnDisableButton()
{
	isDisable=false;
	return 0;
}
bool CButtonEx::IsDisable()
{
	return isDisable;
}

[G1398256223]

引用 1 楼 schlafenhamster 的回复:

CBitmapButton 才 SetBitmap((HBITMAP)A.GetSafeHandle()); 你 是 CButton ，直接 画吧

跪求具体实现方法

[schlafenhamster]

bitblt 而已！

[schlafenhamster]

CBitmapButton 才 SetBitmap((HBITMAP)A.GetSafeHandle()); 你 是 CButton ，直接 画吧

[G1398256223]

我又写了一段代码，但是还是没有效果啊！

CPaintDC dc(this);
	A.Detach();
A.LoadBitmap(Aaa);

BITMAP bmInfo;
::GetObject( A.m_hObject, sizeof(BITMAP), &bmInfo );
INT nWidth, nHeigh;
nWidth = bmInfo.bmWidth;
nHeigh = bmInfo.bmHeight;

	CDC pDC;
	pDC.CreateCompatibleDC(&dc);
	pDC.SelectObject(&A);
	dc.BitBlt(0, 0, nWidth, nHeigh, &pDC, 0, 0, SRCCOPY);

[G1398256223]

[G1398256223]

左下角的按钮消失不见了