| // WinButton.cpp: implementation of the CWinButton class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "WinButton.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CWinButton::CWinButton()
{
}
CWinButton::~CWinButton()
{
}
BOOL CWinButton::Init(HWND hWnd)
{
if (IsWindow(hWnd))
{
m_hWnd = hWnd;//托管原来的BUTTON
m_parenthWnd = GetParent(m_hWnd);
if (SetProp(m_hWnd,"CWINBUTTON",(HANDLE)this) == 0)
{
return FALSE;
}
m_OldProc = SetWindowLong(m_hWnd,GWL_WNDPROC,(LONG)stdProc);//改变窗口回调过程
}
return FALSE;
}
LRESULT WINAPI CWinButton::stdProc(HWND hWnd,UINT uMsg,UINT wParam,LONG lParam)
{
CWinButton* cw = (CWinButton*)GetProp(hWnd,"CWINBUTTON");
return cw->WndProc(uMsg,wParam,lParam);
}
//改变原BUTTON的回调过程
LRESULT CALLBACK CWinButton::WndProc(UINT message, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
switch(message)
{
case WM_PAINT://调用自己设定的刷新
hdc = BeginPaint(m_hWnd, &ps);
OnPaint(hdc);
EndPaint(m_hWnd, &ps);
break;
}
return CallWindowProc((WNDPROC)m_OldProc, m_hWnd, message, wParam, lParam); //默认回调过程
}
//在这里添加BUTTON的背景设置
LRESULT CWinButton::OnPaint(HDC hdc)
{
HDC hdcMem,hdcBmp;
RECT rt;
int width,height;
HBITMAP bmp;
SetBkMode(hdc,TRANSPARENT);
GetClientRect(m_hWnd,&rt);
width = rt.right - rt.left;
height = rt.bottom - rt.top;
hdcMem = CreateCompatibleDC(hdc);
hdcBmp = CreateCompatibleDC(hdc);
SetBkMode(hdcMem,TRANSPARENT);
bmp = CreateCompatibleBitmap(hdc,width,height);
SelectObject(hdcMem,bmp);
if (hBackPic != NULL)
{
SelectObject(hdcBmp,hBackPic);
}
BitBlt(hdcMem,0,0,width,height,hdcBmp,0,0,SRCCOPY);
BitBlt(hdc,0,0,width,height,hdcMem,0,0,SRCCOPY);
DeleteDC(hdcBmp);
DeleteDC(hdcMem);
DeleteObject(bmp);
return TRUE;
}
BOOL CWinButton::SetBackPic(HBITMAP hBitmap, BOOL bReSize)
{
BITMAP bm;
RECT rt;
hBackPic = hBitmap;
if (hBitmap != NULL)
{
if(bReSize)
{
GetObject(hBackPic,sizeof(bm),&bm);
SetWindowPos(m_hWnd,0,0,0,bm.bmWidth,bm.bmHeight,SWP_NOMOVE|SWP_NOREPOSITION);
}
GetClientRect(m_hWnd,&rt);
InvalidateRect(m_hWnd,&rt,TRUE);
return TRUE;
}
return FALSE;
}
|
