Shell Execute 將 Window 帶到前面

Question

我正在使用此函數從我的 MSI 調用可執行文件。 但是，可執行文件的窗口隱藏在我的 MSI 窗口后面。 有什么辦法可以把它帶到前面嗎？

我已經嘗試在調用ShellExecute之前最小化所有窗口，但這仍然沒有將可執行窗口帶到前面。

extern "C" UINT __stdcall InstallDrivers(MSIHANDLE hInstall)
{
HRESULT hr = S_OK;
UINT er = ERROR_SUCCESS;
HANDLE hFile = INVALID_HANDLE_VALUE;
BYTE* pbData = NULL;
DWORD cbData = 0;
char pwzFilename[MAX_PATH], szDriverType[MAX_PATH], pwzSentinelFilename[MAX_PATH], szIsInstalled[MAX_PATH];
LPWSTR szValueBuf = NULL, szIsHaspInstalled = NULL, szIsSentinelInstalled = NULL;

hr = WcaInitialize(hInstall, "InstallDrivers");
ExitOnFailure(hr, "Failed to initialize");

WcaLog(LOGMSG_STANDARD, "Initialized.");
WcaLog(LOGMSG_STANDARD, "%s", szValueBuf);
CreateDirectory("C:\\Temp", NULL);

strcpy_s(pwzFilename, "C:\\Temp\\HASPUserSetup.exe");

hr = ExtractBinary(L"Hasp", &pbData, &cbData);
ExitOnFailure(hr, "failed to extract binary data");

if ((hFile = CreateFile(pwzFilename, GENERIC_WRITE,FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) 
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not create new temporary file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;  
} 

DWORD cbWritten = 0;
if ( !WriteFile(hFile, pbData, cbData, &cbWritten, NULL) )
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not write to file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;
}

CloseHandle(hFile);

strcpy_s(pwzSentinelFilename, "C:\\Temp\\sentinel_setup.exe");
hr = ExtractBinary(L"Sentinel", &pbData, &cbData);
ExitOnFailure(hr, "failed to extract binary data");

if ((hFile = CreateFile(pwzSentinelFilename, GENERIC_WRITE,FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) 
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not create new temporary file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;  
} 


if ( !WriteFile(hFile, pbData, cbData, &cbWritten, NULL) )
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not write to file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;
}

CloseHandle(hFile);

hr = WcaGetProperty(L"DRIVER", &szValueBuf);
ExitOnFailure(hr, "failed to get driver info");

wcstombs(szDriverType, szValueBuf, 260);
if (strcmp(szDriverType, "Hasp") == 0)
{   

    hr = WcaGetProperty(L"SENTINELINSTALLED", &szIsSentinelInstalled);
    ExitOnFailure(hr, "failed to get driver info");
    wcstombs(szIsInstalled, szValueBuf, 260);
    if (strcmp(szIsInstalled, "Sentinel Protection Installer 7.6.5") == 0)
    {
    ShellExecute(NULL, "open",  pwzSentinelFilename, NULL, NULL, SW_SHOWNORMAL);
    }
    ShellExecute(NULL, "open",  pwzFilename, NULL, NULL, SW_SHOWNORMAL);
}else
{
    hr = WcaGetProperty(L"HASPINSTALLED", &szIsHaspInstalled);
    ExitOnFailure(hr, "failed to get driver info");
    wcstombs(szIsInstalled, szIsHaspInstalled, 260);
    if (strcmp(szIsInstalled, "Sentinel Runtime") == 0)
    {
    ShellExecute(NULL, "open",  pwzFilename, NULL, NULL, SW_SHOWNORMAL);
    }
    ShellExecute(NULL, "open",  pwzSentinelFilename, NULL, NULL, SW_SHOWNORMAL);
}
LExit:
er = SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_INSTALL_FAILURE;
return WcaFinalize(er);
}

更新代碼：

extern "C" UINT __stdcall InstallDrivers(MSIHANDLE hInstall)
{
HRESULT hr = S_OK;
UINT er = ERROR_SUCCESS;
HANDLE hFile = INVALID_HANDLE_VALUE;
BYTE* pbData = NULL;
DWORD cbData = 0;
char pwzFilename[MAX_PATH], szDriverType[MAX_PATH], pwzSentinelFilename[MAX_PATH], szIsInstalled[MAX_PATH];
LPWSTR szValueBuf = NULL, szIsHaspInstalled = NULL, szIsSentinelInstalled = NULL;
SHELLEXECUTEINFO ShExecInfo;

ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = NULL;
ShExecInfo.hwnd = NULL;
ShExecInfo.lpVerb = NULL;
ShExecInfo.lpParameters = NULL;
ShExecInfo.lpDirectory = NULL;
ShExecInfo.nShow = SW_SHOWNORMAL;
ShExecInfo.hInstApp = NULL;

hr = WcaInitialize(hInstall, "InstallDrivers");
ExitOnFailure(hr, "Failed to initialize");

WcaLog(LOGMSG_STANDARD, "Initialized.");
WcaLog(LOGMSG_STANDARD, "%s", szValueBuf);
CreateDirectory("C:\\Temp", NULL);

strcpy_s(pwzFilename, "C:\\Temp\\HASPUserSetup.exe");

hr = ExtractBinary(L"Hasp", &pbData, &cbData);
ExitOnFailure(hr, "failed to extract binary data");

if ((hFile = CreateFile(pwzFilename, GENERIC_WRITE,FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) 
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not create new temporary file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;  
} 

DWORD cbWritten = 0;
if ( !WriteFile(hFile, pbData, cbData, &cbWritten, NULL) )
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not write to file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;
}

CloseHandle(hFile);

strcpy_s(pwzSentinelFilename, "C:\\Temp\\sentinel_setup.exe");
hr = ExtractBinary(L"Sentinel", &pbData, &cbData);
ExitOnFailure(hr, "failed to extract binary data");

if ((hFile = CreateFile(pwzSentinelFilename, GENERIC_WRITE,FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) 
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not create new temporary file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;  
} 


if ( !WriteFile(hFile, pbData, cbData, &cbWritten, NULL) )
{
    PMSIHANDLE hRecord = MsiCreateRecord(0);
    MsiRecordSetString(hRecord, 0, TEXT("Could not write to file"));
    MsiProcessMessage(hInstall, INSTALLMESSAGE(INSTALLMESSAGE_ERROR + MB_OK), hRecord);
    return ERROR_INSTALL_USEREXIT;
}

CloseHandle(hFile);

hr = WcaGetProperty(L"DRIVER", &szValueBuf);
ExitOnFailure(hr, "failed to get driver info");

wcstombs(szDriverType, szValueBuf, 260);
if (strcmp(szDriverType, "Hasp") == 0)
{   

    hr = WcaGetProperty(L"SENTINELINSTALLED", &szIsSentinelInstalled);
    ExitOnFailure(hr, "failed to get driver info");
    wcstombs(szIsInstalled, szValueBuf, 260);
    if (strcmp(szIsInstalled, "Sentinel Protection Installer 7.6.5") == 0)
    {
        AllowSetForegroundWindow(ASFW_ANY);
        ShExecInfo.lpFile = pwzSentinelFilename;
        ShellExecuteEx(&ShExecInfo);
        /*ShellExecute(NULL, "open",  pwzSentinelFilename, NULL, NULL, SW_SHOWNORMAL);*/
    }
    AllowSetForegroundWindow(ASFW_ANY);
    ShExecInfo.lpFile = pwzFilename;
    ShellExecuteEx(&ShExecInfo);

    /*ShellExecute(NULL, "open",  pwzFilename, NULL, NULL, SW_SHOWNORMAL);*/
}else
{
    hr = WcaGetProperty(L"HASPINSTALLED", &szIsHaspInstalled);
    ExitOnFailure(hr, "failed to get driver info");
    wcstombs(szIsInstalled, szIsHaspInstalled, 260);
    if (strcmp(szIsInstalled, "Sentinel Runtime") == 0)
    {
        AllowSetForegroundWindow(ASFW_ANY);
        /*ShellExecute(NULL, "open",  pwzFilename, NULL, NULL, SW_SHOWNORMAL);*/
        ShExecInfo.lpFile = pwzFilename;
        ShellExecuteEx(&ShExecInfo);
    }
    AllowSetForegroundWindow(ASFW_ANY);
    ShExecInfo.lpFile = pwzSentinelFilename;
    ShellExecuteEx(&ShExecInfo);
    /*  ShellExecute(NULL, "open",  pwzSentinelFilename, NULL, NULL, SW_SHOWNORMAL);*/
}
LExit:
er = SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_INSTALL_FAILURE;
return WcaFinalize(er);
}

Answer 1

Windows 不允許進程搶占前台窗口，除非用戶啟動它們。 這是為了避免諸如說服用戶將他們的銀行詳細信息輸入錯誤的窗口之類的事情。 但是，當前的前台進程可以將權限傳遞給另一個進程來執行此操作。 有關詳細信息，請參閱AllowSetForegroundWindow 。 為此，您必須為將成為前台的進程提供進程 ID，而 ShellExecute 不提供該 ID。 但是，如果您切換到使用ShellExecuteEx ，則可以從 SHELLEXECUTEINFO 結構上的 hProcess 成員中獲取此信息。

然后你可以在你的新進程中調用SetForegroundWindow並且它會被允許。 否則它只是開始在任務欄上閃爍。

編輯

如果您的初始應用程序是前台應用程序，並且您從中啟動子進程，那么子進程應自動變為前台，如這些函數的文檔中所述。

下面是我們如何選擇啟用和設置另一個應用程序成為前台窗口的示例。 在這種情況下，它只是創建一個文本文件並使用open動詞調用 ShellExecuteEx。 我們必須等待子進程啟動並准備好它的窗口，然后我們可以從進程 ID 中找到該窗口並授予它權限並將其窗口設置為前台。 在這種情況下，啟動的記事本（或任何 .txt 文件的“打開”動詞）無論如何都將是前台。 如果您單獨運行一個記事本進程並在該進程的進程 ID 中替換我們通常放置子進程 ID 的進程，那么我們可以使另一個進程成為前台——一個不屬於我們進程樹的進程。 這可以使用 Visual C++ 和cl -nologo -W3 -O2 -MD fg_test.cpp以生成 fg_test.exe。

#define STRICT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <shellapi.h>

#pragma comment(lib, "shell32")
#pragma comment(lib, "user32")

static void PrintError(LPCTSTR szPrefix, DWORD dwError);
static BOOL CALLBACK OnGetWindowByProcess(HWND hwnd, LPARAM lParam);

typedef struct {
    DWORD pid;
    HWND hwnd;
} WINDOWPROCESSINFO;

int _tmain(int argc, TCHAR *argv[])
{
    SHELLEXECUTEINFO sxi = {0};
    sxi.cbSize = sizeof(sxi);
    sxi.nShow = SW_SHOWNORMAL;

    FILE *fp = NULL;
    _tfopen_s(&fp, _T("junk.txt"), _T("wt"));
    _fputts(_T("Example text file\n"), fp);
    fclose(fp);

    sxi.fMask = SEE_MASK_NOCLOSEPROCESS | SEE_MASK_NOASYNC | SEE_MASK_WAITFORINPUTIDLE;
    sxi.lpVerb = _T("open");
    sxi.lpFile = _T("junk.txt");
    if (!ShellExecuteEx(&sxi))
        PrintError(_T("ShellExecuteEx"), GetLastError());
    else
    {
        WINDOWPROCESSINFO info;
        info.pid = GetProcessId(sxi.hProcess); // SPECIFY PID
        info.hwnd = 0;
        AllowSetForegroundWindow(info.pid);
        EnumWindows(OnGetWindowByProcess, (LPARAM)&info);
        if (info.hwnd != 0)
        {
            SetForegroundWindow(info.hwnd);
            SetActiveWindow(info.hwnd);
        }
        CloseHandle(sxi.hProcess);

    }
    return 0;
}

static BOOL CALLBACK OnGetWindowByProcess(HWND hwnd, LPARAM lParam)
{
    WINDOWPROCESSINFO *infoPtr = (WINDOWPROCESSINFO *)lParam;
    DWORD check = 0;
    BOOL br = TRUE;
    GetWindowThreadProcessId(hwnd, &check);
    _tprintf(_T("%x %x %x\n"), hwnd, check, infoPtr->pid);
    if (check == infoPtr->pid)
    {
        _tprintf(_T("found window %x for process id %x\n"), hwnd, check);
        infoPtr->hwnd = hwnd;
        br = FALSE;
    }
    return br;
}

static void
PrintError(LPCTSTR szPrefix, DWORD dwError)
{
    LPTSTR lpsz = NULL;
    DWORD cch = 0;

    cch = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
                        | FORMAT_MESSAGE_FROM_SYSTEM
                        | FORMAT_MESSAGE_IGNORE_INSERTS,
                        NULL, dwError, LANG_NEUTRAL, (LPTSTR)&lpsz, 0, NULL);
    if (cch < 1) {
        cch = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
                            | FORMAT_MESSAGE_FROM_STRING
                            | FORMAT_MESSAGE_ARGUMENT_ARRAY,
                            _T("Code 0x%1!08x!"),
                            0, LANG_NEUTRAL, (LPTSTR)&lpsz, 0,
                            (va_list*)&dwError);
    }
    _ftprintf(stderr, _T("%s: %s"), szPrefix, lpsz);
    LocalFree((HLOCAL)lpsz);
}