GetApplicationUserModelId function (appmodel.h)

Gets the application user model ID for the specified process.

Syntax

LONG GetApplicationUserModelId(
  HANDLE hProcess,
  UINT32 *applicationUserModelIdLength,
  PWSTR  applicationUserModelId
);

Parameters

hProcess

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

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

applicationUserModelId

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 code Description
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"Error %d in OpenProcess (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"Error %d in GetApplicationUserModelId\n", rc);
        return;
    }

    PWSTR fullName = (PWSTR) malloc(length * sizeof(*fullName));
    if (fullName == NULL)
    {
        wprintf(L"Error allocating memory\n");
        return;
    }

    rc = GetApplicationUserModelId(process, &length, fullName);
    if (rc != ERROR_SUCCESS)
        wprintf(L"Error %d retrieving ApplicationUserModelId\n", rc);
    else
        wprintf(L"%s\n", fullName);

    free(fullName);
}

Requirements

   
Target Platform Windows
Header appmodel.h
Library Kernel32.lib
DLL Kernel32.dll

See also

GetCurrentApplicationUserModelId

GetPackageFamilyName

GetPackageId

GetPackageInfo

GetPackagePath