最近遇到的3个TT问题

	Image image(L"bk.png", TRUE);			//GDI+中的类



	int w = image.GetWidth();

	int h = image.GetHeight();

	int t = graph.DrawImage(&image, 0,0, 267,160);大小，否则会失真

	MoveWindow(rct.left,rct.top, 267,160);   //设置窗体大小和图片大小一致，无边框的对话框

//得到 w = 267  h = 154  t=0

BOOL CTestApp::InitInstance()

{

	AfxEnableControlContainer();

	IsSupportGDIPlus();

	GdiplusStartupInput gdiplusStartupInput;

	GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

         ……

｝



BOOL CTestDlg::OnInitDialog()

{

	CDialog::OnInitDialog();

         ……

	// TODO: Add extra initialization here

	//初始化GDI+.

	m_Blend.BlendOp=0; //theonlyBlendOpdefinedinWindows2000

	m_Blend.BlendFlags=0; //nothingelseisspecial...

	m_Blend.AlphaFormat=1; //...

	m_Blend.SourceConstantAlpha=255;//AC_SRC_ALPHA



	//窗体样式为0x80000为层级窗体

	DWORD dwExStyle=GetWindowLong(m_hWnd,GWL_EXSTYLE);

	SetWindowLong(m_hWnd,GWL_EXSTYLE,dwExStyle^0x80000);

	

	//绘制内存位图

	//HDC hdcTemp=GetDC()->m_hDC;

	CDC* pDC = GetDC();

	//m_hdcMemory=CreateCompatibleDC(hdcTemp);



	m_hdcMemory=CreateCompatibleDC(pDC->m_hDC);

	//HBITMAP hBitMap=CreateCompatibleBitmap(hdcTemp,500,500);

	

	HBITMAP hBitMap=CreateCompatibleBitmap(pDC->m_hDC, 500,500);

	SelectObject(m_hdcMemory, hBitMap);

	::DeleteObject(hBitMap);

	//::DeleteDC(hdcTemp);

	ReleaseDC(pDC);



	//使用GDI+载入PNG图片

	HDC hdcScreen=::GetDC(m_hWnd);

	RECT rct;

	GetWindowRect(&rct);

	POINT ptWinPos={rct.left, rct.top};

	Graphics graph(m_hdcMemory);			//GDI+中的类

	Image image(L"bk.png", TRUE);			//GDI+中的类

	graph.DrawImage(&image, 0,0, 267,160);	//后面两个参数要设置成跟图片一样大小，否则会失真

	MoveWindow(rct.left,rct.top, 267,160);   //设置窗体大小和图片大小一致，无边框的对话框



	//使用UpdateLayerWindow进行窗口透明处理

	HMODULE hFuncInst=LoadLibrary("User32.DLL");

	typedef BOOL (WINAPI *MYFUNC)(HWND, HDC, POINT*, SIZE*, HDC, POINT*, COLORREF, BLENDFUNCTION*, DWORD);          

	MYFUNC UpdateLayeredWindow;

	UpdateLayeredWindow=(MYFUNC)GetProcAddress(hFuncInst, "UpdateLayeredWindow");

	SIZE sizeWindow={267, 160};

	POINT ptSrc={0, 0};

	UpdateLayeredWindow( m_hWnd, hdcScreen, &ptWinPos, &sizeWindow, m_hdcMemory, &ptSrc, 0, &m_Blend, 2);

	GetWindowRect(&m_oldRect);              //记录窗体初始化大小的位置



	::ReleaseDC(m_hWnd, hdcScreen);

	::FreeLibrary(hFuncInst);

	return TRUE;  // return TRUE  unless you set the focus to a control

}

    // 这里开始要注意

    Image image(L"bk.png", TRUE);            //GDI+中的类