C与MFC获取系统已安装软件信息.txt求而不得，舍而不能，得而不惜，这是人最大的悲哀。付出真心才能得到真心，却也可能伤得彻底。保持距离也就能保护自己，却也注定永远寂寞。#include "iostream"
#include <windows.h>
#include <tchar.h>
using namespace std;
LRESULT GetValue(HKEY hKey, LPCTSTR name, LPTSTR value, LPLONG size)
{
return ::RegQueryValueEx(hKey, name, NULL, NULL, (LPBYTE)value, (LPDWORD)size);
}
void DumpSoftware(LPCTSTR szKey , HKEY hParent)
{
LRESULT lr;
HKEY hKey;
LONG size;
TCHAR buffer[MAX_PATH] ;
lr = RegOpenKey(hParent, szKey, &hKey);
//不能打开注册表
if(lr != ERROR_SUCCESS)
{
cout << _T("不能打开注册表！") << szKey << _T("(") << lr << _T(")") << endl;
return;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("DisplayName"), &buffer[0], &size);
//注册表打开成功
if(lr == ERROR_SUCCESS)
{
if(size > 0)
{
cout << _T("显示名字：" ) << buffer << endl;
}
}
else
{
size = sizeof(buffer);
lr = GetValue(hKey, _T("QuietDisplayName"), &buffer[0], &size);
if(ERROR_SUCCESS== lr && size > 0 )
{
cout << _T("显示名字：" ) << buffer << endl;
}
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("DisplayVersion"), &buffer[0], &size);
//获取软件版本号
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("软件版本号：") << buffer << endl;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("Publisher"), &buffer[0], &size);
//软件开发商
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("开发商：") << buffer << endl;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("InstallLocation"), &buffer[0], &size);
//获取安装路径
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("安装路径：") << buffer << endl;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("InstallSource"), &buffer[0], &size);
//获取安装源
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("安装源：") << buffer << endl;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("UninstallPath"), &buffer[0], &size);
//获取卸载路径
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("卸载路径：") << buffer << endl;
}
size = sizeof(buffer);
lr = GetValue(hKey, _T("UninstallString"), &buffer[0], &size);
//软件卸载命令
if(ERROR_SUCCESS == lr && size > 0)
{
cout << _T("软件卸载命令：") << buffer << endl;
}
RegCloseKey(hKey);
}
int main(int argc, char* argv[])
{
unsigned long index;
TCHAR buffer[MAX_PATH];
HKEY hKey;
LRESULT lr;
lr = RegOpenKey(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall"), & hKey);
if(lr != ERROR_SUCCESS)
{
cout << _T("不能打开注册表！") << lr << endl;
return -1;
}
for(index =0; ;index++)
{
lr = RegEnumKey(hKey, index, &buffer[0], sizeof(buffer));
switch(lr)
{
case ERROR_SUCCESS:
DumpSoftware(buffer,hKey);
break;
case ERROR_NO_MORE_ITEMS:
cout<<_T("完成软件搜索！") << endl;
RegCloseKey(hKey);
return 0;
default:
cout<<_T("未能完成软件搜索！") << lr << endl;
RegCloseKey(hKey);
return -2;
}
}
cout<<_T("完成软件搜索！") << endl;
RegCloseKey(hKey);
return 0;
}
