就一个加载png图片的程序弄了一下午，想哭。
***在stadfx.h文件中添加
#include <comdef.h>//初始化一下com口
#include "gdiplus.h"
using namespace Gdiplus;
#pragma comment(lib, "gdiplus.lib")
1.在app.cpp中添加ULONG_PTR m_gdiplusToken;
2.在BOOL xxxApp::InitInstance()中添加
GdiplusStartupInput gdiplusStartupInput;
GdiplusStartup(&m_gdiplusToken, &gdiplusStartupInput, NULL);
3.在int xxxApp::ExitInstance()中添加
GdiplusShutdown(m_gdiplusToken);
4.在app.cpp中添加如下代码：
BOOL ImageFromIDResource(UINT nID, LPCTSTR sTR,Image *&pImg)
{
HINSTANCE hInst = AfxGetResourceHandle();
HRSRC hRsrc = ::FindResource (hInst,MAKEINTRESOURCE(nID),sTR); // type
if (!hRsrc)
return FALSE;
// load resource into memory
DWORD len = SizeofResource(hInst, hRsrc);
BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
if (!lpRsrc)
return FALSE;
// Allocate global memory on which to create stream
HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
memcpy(pmem,lpRsrc,len);
GlobalUnlock(m_hMem);
IStream* pstm;
CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);
// load from stream
pImg=Gdiplus::Image::FromStream(pstm);
// free/release stuff
pstm->Release();
FreeResource(lpRsrc);
GlobalFree(m_hMem);
return TRUE;
}
5.void CAPP::OnPaint()中添加
CPaintDC dc(this); // device context for painting
//CDC *pDC = this->GetDc();
CClientDC *pDC = new CClientDC(GetDlgItem(IDC_STATIC_PIC));
CRect rect;
GetDlgItem(IDC_STATIC_PIC)->GetWindowRect(&rect);
Graphics graphics(pDC->m_hDC); // Create a GDI+ graphics object
Image *pimage; // Construct an image
ImageFromIDResource(IDB_PNG5,_T("PNG"),pimage);
graphics.DrawImage(pimage, 0, 0,pimage->GetWidth(), pimage->GetHeight());
delete pDC;
6.将图片控件属性更改为ower drawer。