为什么获取.exe图标存储为.icon文件颜色会失真以及如何确保获取存储的是主图标？

YJasper 2016-05-09 10:56:32

1）在获取.exe文件的图标存储为.icon文件时，部分图标会正常获取，部分图标颜色会失真，图标也会模糊。请问该怎么解决？是因为获取资源的尺寸参数缺省问题么？需要怎么修改？如：

2）下面的代码是我用来获得图标的方法，但是这样做会遍历该exe文件的全部图标（快捷方式里更改图标就会在文本框内显示所有图片），并最终保存最后一个图标（而这个图标可能不是系统在桌面上给我们展示的exe图标）。请问该用什么办法解决呢？去掉遍历过程么？

EnumResourceNames(hModule, RT_GROUP_ICON, (ENUMRESNAMEPROC)EnumIconProc, (LPARAM)&iconIndex);

BOOL CALLBACK EnumIconProc(HMODULE hModule,LPCTSTR lpszType,LPTSTR lpszName,LPARAM lParam)

{

    HRSRC hRes = FindResource(hModule, lpszName, RT_GROUP_ICON);	

    if (hRes == NULL) 

		return TRUE;

 

    HGLOBAL hGlobal = LoadResource(hModule, hRes);

    if (hGlobal == NULL) 

		return TRUE;

     

    LPVOID lpBuffer = LockResource(hGlobal);

    if (lpBuffer == NULL)

	{

		FreeResource(hGlobal);

		return TRUE;

	}



    DWORD dwSize = SizeofResource(hModule, hRes);



	int nId = LookupIconIdFromDirectoryEx((PBYTE)lpBuffer,TRUE,SM_CXICON,SM_CYICON,LR_DEFAULTCOLOR); //SM_CXICON,SM_CYICON为缺省显示一般32*32



	hRes = FindResource(hExe, MAKEINTRESOURCE(nId),MAKEINTRESOURCE(RT_ICON));

	if (hRes == NULL) 

		return TRUE;



	hGlobal = LoadResource(hExe,hRes);

	if (hGlobal == NULL) 

		return TRUE;

	

	lpBuffer = LockResource(hGlobal);

	if (lpBuffer == NULL) 

		return TRUE;



	dwSize = SizeofResource(hModule,hRes);



	HICON hIcon = CreateIconFromResourceEx((PBYTE)lpBuffer,dwSize,TRUE,0x00030000,SM_CXICON,SM_CYICON,LR_DEFAULTCOLOR);

    DWORD dwgle = GetLastError();

	if(NULL == hIcon)

		return TRUE;



	HRESULT hr = SaveIcon(hIcon);



    return TRUE;

}

HRESULT SaveIcon(HICON hIcon) {

    // Create the IPicture interface

    PICTDESC desc = { sizeof(PICTDESC) };

    desc.picType = PICTYPE_ICON;

    desc.icon.hicon = hIcon;

    IPicture* pPicture = 0;

    HRESULT hr = OleCreatePictureIndirect(&desc, IID_IPicture, FALSE, (void**)&pPicture);

    if (FAILED(hr)) return hr;



    // Create a stream and save the image

    IStream* pStream = 0;

    CreateStreamOnHGlobal(0, TRUE, &pStream);

    LONG cbSize = 0;

    hr = pPicture->SaveAsFile(pStream, TRUE, &cbSize);



    // Write the stream content to the file

    if (!FAILED(hr)) 

	{

		HGLOBAL hBuf = 0;

		GetHGlobalFromStream(pStream, &hBuf);

		void* buffer = GlobalLock(hBuf);

		HANDLE hFile = CreateFile(SAVE_ICON_PATH, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, 0, 0);

		if (!hFile)

			hr = HRESULT_FROM_WIN32(GetLastError());

		else 

		{

			DWORD written = 0;

			WriteFile(hFile, buffer, cbSize, &written, 0);

			CloseHandle(hFile);

		}

		GlobalUnlock(buffer);

    }

    // Cleanup

    pStream->Release();

    pPicture->Release();

    return hr;



}