windows c ++检查已安装的程序
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原文地址: http://stackoverflow.com/questions/2467429/
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c++ check installed programms
提问by Xaver
How do I list all programs installed on my computer? I've tried using the MsiEnumProductsand MsiGetProductInfofunctions, but they do not return a full list of installed applications like I see in "Add/Remove Programs".
如何列出计算机上安装的所有程序？我试过使用MsiEnumProducts和MsiGetProductInfo函数，但它们没有像我在“添加/删除程序”中看到的那样返回已安装应用程序的完整列表。
回答by NTDLS
Enumerate the registry key:
枚举注册表项：
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
bool EnumInstalledSoftware(void)
{
HKEY hUninstKey = NULL;
HKEY hAppKey = NULL;
WCHAR sAppKeyName[1024];
WCHAR sSubKey[1024];
WCHAR sDisplayName[1024];
WCHAR *sRoot = L"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
long lResult = ERROR_SUCCESS;
DWORD dwType = KEY_ALL_ACCESS;
DWORD dwBufferSize = 0;
//Open the "Uninstall" key.
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, sRoot, 0, KEY_READ, &hUninstKey) != ERROR_SUCCESS)
{
return false;
}
for(DWORD dwIndex = 0; lResult == ERROR_SUCCESS; dwIndex++)
{
//Enumerate all sub keys...
dwBufferSize = sizeof(sAppKeyName);
if((lResult = RegEnumKeyEx(hUninstKey, dwIndex, sAppKeyName,
&dwBufferSize, NULL, NULL, NULL, NULL)) == ERROR_SUCCESS)
{
//Open the sub key.
wsprintf(sSubKey, L"%s\%s", sRoot, sAppKeyName);
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, sSubKey, 0, KEY_READ, &hAppKey) != ERROR_SUCCESS)
{
RegCloseKey(hAppKey);
RegCloseKey(hUninstKey);
return false;
}
//Get the display name value from the application's sub key.
dwBufferSize = sizeof(sDisplayName);
if(RegQueryValueEx(hAppKey, L"DisplayName", NULL,
&dwType, (unsigned char*)sDisplayName, &dwBufferSize) == ERROR_SUCCESS)
{
wprintf(L"%s\n", sDisplayName);
}
else{
//Display name value doe not exist, this application was probably uninstalled.
}
RegCloseKey(hAppKey);
}
}
RegCloseKey(hUninstKey);
return true;
}
