GetApplicationUserModelId function

Gets the application user model ID for the specified process.

Syntax


LONG WINAPI GetApplicationUserModelId(
  _In_     HANDLE hProcess,
  _Inout_  UINT32 *applicationUserModelIdLength,
  _Out_    PWSTR applicationUserModelId
);

Parameters

hProcess [in]

A handle to the process. This handle must have the PROCESS_QUERY_LIMITED_INFORMATION access right. For more info, see Process Security and Access Rights.

applicationUserModelIdLength [in, out]

On input, the size of the applicationUserModelId buffer, in wide characters. On success, the size of the buffer used, including the null terminator.

applicationUserModelId [out]

A pointer to a buffer that receives the application user model ID.

Return value

If the function succeeds it returns ERROR_SUCCESS. Otherwise, the function returns an error code. The possible error codes include the following.

Return codeDescription
APPMODEL_ERROR_NO_APPLICATION

The process has no application identity.

ERROR_INSUFFICIENT_BUFFER

The buffer is not large enough to hold the data. The required size is specified by applicationUserModelIdLength.

 

Remarks

For info about string size limits, see Identity constants.

Examples


#define _UNICODE 1
#define UNICODE 1

#include <Windows.h>
#include <appmodel.h>
#include <malloc.h>
#include <stdlib.h>
#include <stdio.h>

int ShowUsage();
void ShowProcessApplicationUserModelId(__in const UINT32 pid, __in HANDLE process);

int ShowUsage()
{
    wprintf(L"Usage: GetApplicationUserModelId <pid> [<pid>...]\n");
    return 1;
}

int __cdecl wmain(__in int argc, __in_ecount(argc) WCHAR * argv[])
{
    if (argc <= 1)
        return ShowUsage();

    for (int i=1; i<argc; ++i)
    {
        UINT32 pid = wcstoul(argv[i], NULL, 10);
        if (pid > 0)
        {
            HANDLE process = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, pid);
            if (process == NULL)
                wprintf(L"OpenProcess failed with error %d (pid=%u)\n", GetLastError(), pid);
            else
            {
                ShowProcessApplicationUserModelId(pid, process);
                CloseHandle(process);
            }
        }
    }
    return 0;
}

void ShowProcessApplicationUserModelId(__in const UINT32 pid, __in HANDLE process)
{
    wprintf(L"Process %u (handle=%p)\n", pid, process);

    UINT32 length = 0;
    LONG rc = GetApplicationUserModelId(process, &length, NULL);
    if (rc != ERROR_INSUFFICIENT_BUFFER)
    {
        if (rc == APPMODEL_ERROR_NO_APPLICATION)
            wprintf(L"Desktop application\n");
        else
            wprintf(L"GetApplicationUserModelId failed with error %d\n", rc);
        return;
    }

    PWSTR fullName = (PWSTR) malloc(length * sizeof(*fullName));
    if (fullName == NULL)
    {
        wprintf(L"Memory allocation failed\n");
        return;
    }

    rc = GetApplicationUserModelId(process, &length, fullName);
    if (rc != ERROR_SUCCESS)
        wprintf(L"GetApplicationUserModelId failed with error %d\n", rc);
    else
        wprintf(L"%s\n", fullName);

    free(fullName);
}

Requirements

Header

Appmodel.h

Library

Kernel32.lib

DLL

Kernel32.dll

See also

GetCurrentApplicationUserModelId
GetPackageFamilyName
GetPackageId
GetPackageInfo
GetPackagePath

 

 

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