GetPackageFullName function (appmodel.h)

Article
12/09/2022

Gets the package full name for the specified process.

Syntax

LONG GetPackageFullName(
  [in]            HANDLE hProcess,
  [in, out]       UINT32 *packageFullNameLength,
  [out, optional] PWSTR  packageFullName
);

Parameters

[in] hProcess

Type: HANDLE

A handle to the process that has the PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION access right. For more information, see Process Security and Access Rights.

[in, out] packageFullNameLength

Type: UINT32*

On input, the size of the packageFullName buffer, in characters. On output, the size of the package full name returned, in characters, including the null terminator.

[out, optional] packageFullName

Type: PWSTR

The package full name.

Return value

Type: LONG

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_PACKAGE	The process has no package identity.
ERROR_INSUFFICIENT_BUFFER	The buffer is not large enough to hold the data. The required size is specified by packageFullNameLength.

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 ShowProcessPackageFullName(__in const UINT32 pid, __in HANDLE process);

int ShowUsage()
{
    wprintf(L"Usage: GetPackageFullName <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
            {
                ShowProcessPackageFullName(pid, process);
                CloseHandle(process);
            }
        }
    }
    return 0;
}

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

    UINT32 length = 0;
    LONG rc = GetPackageFullName(process, &length, NULL);
    if (rc != ERROR_INSUFFICIENT_BUFFER)
    {
        if (rc == APPMODEL_ERROR_NO_PACKAGE)
            wprintf(L"Process has no package identity\n");
        else
            wprintf(L"Error %d in GetPackageFullName\n", rc);
        return;
    }

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

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

    free(fullName);
}

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Target Platform	Windows
Header	appmodel.h
Library	Kernel32.lib
DLL	Kernel32.dll

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