如何将HICON保存到.ico文件？

问题描述

我从.exe / .dll解压缩图标，并想将其保存在.ico文件中。

我试图使用 :: OleCreatePictureIndirect（）然后

code> IPicture-> SaveAsFile（）。它工作，但图标的透明部分涂黑色（显然不是透明的任何更多:(）。

我尝试手动解析它工作正常，但是麻烦，恐怕与Vista图标/ .icl文件/ etc的并发症。

请帮助谢谢。

解决方案

您可以用 IPicture :: SaveAsFile（）保存 HICON 下面是一个使用它的示例C ++程序：

  #includestdafx.h
 #include< windows.h> 
 #include< olectl.h> 
 #pragma comment（lib，oleaut32.lib）
 
 HRESULT SaveIcon（HICON hIcon，const wchar_t * path ）{
 //创建IPicture表面
 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; 
 
 //创建流并保存图像
 IStream * pStream = 0; 
 CreateStreamOnHGlobal（0，TRUE，& pStream）; 
 LONG cbSize = 0; 
 hr = pPicture-> SaveAsFile（pStream，TRUE，& cbSize）; 
 
 //将流内容写入文件
 if（！FAILED（hr））{
 HGLOBAL hBuf = 0; 
 GetHGlobalFromStream（pStream，& hBuf）; 
 void * buffer = GlobalLock（hBuf）; 
 HANDLE hFile = CreateFile（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）; 
} 
 //清理
 pStream-> Release（）; 
 pPicture-> Release（）; 
 return hr; 
 
} 
 int _tmain（int argc，_TCHAR * argv []）
 {
 HICON hIcon =（HICON）LoadImage（0，Lc：\ \windows\\system32\\perfcentercpl.ico，IMAGE_ICON，32，32，LR_LOADFROMFILE）; 
 if（！hIcon）return GetLastError（）; 
 HRESULT hr = SaveIcon（hIcon，Lc：\\temp\\ test.ico）; 
 return hr; 
} 
  

I am extracting an icon from .exe/.dll and want to save it in an .ico file. What is the best way to do this?

I have tried to use ::OleCreatePictureIndirect() and then IPicture->SaveAsFile(). It works but transparent parts of the icon are painted black (and obviously are not transparent any more :( ).

I tried manual parsing. It works OK but is cumbersome and I am afraid of complications with Vista icons/.icl files/etc.

Please, help. Thanks.

解决方案

You can save HICONs with the IPicture::SaveAsFile() method. Here's a sample C++ program that uses it:

#include "stdafx.h"
#include <windows.h>
#include <olectl.h>
#pragma comment(lib, "oleaut32.lib")

HRESULT SaveIcon(HICON hIcon, const wchar_t* path) {
    // Create the IPicture intrface
    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(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;

}
int _tmain(int argc, _TCHAR* argv[])
{
    HICON hIcon = (HICON)LoadImage(0, L"c:\\windows\\system32\\perfcentercpl.ico", IMAGE_ICON, 32, 32, LR_LOADFROMFILE);
    if (!hIcon) return GetLastError();
    HRESULT hr = SaveIcon(hIcon, L"c:\\temp\\test.ico");
    return hr;
}

这篇关于如何将HICON保存到.ico文件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！