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Merge branch 'fix-gdk-win32-display-name' into 'main'

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GDK/Win32: Fix gdk_display_get_name()

See merge request GNOME/gtk!7664
This commit is contained in:
Luca Bacci 2024-08-30 12:32:16 +00:00
commit da9886d822
1 changed files with 56 additions and 50 deletions
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106
gdk/win32/gdkdisplay-win32.c
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@ -561,64 +561,70 @@ G_DEFINE_TYPE (GdkWin32Display, gdk_win32_display, GDK_TYPE_DISPLAY)
static const char *
gdk_win32_display_get_name (GdkDisplay *display)
{
HDESK hdesk = GetThreadDesktop (GetCurrentThreadId ());
char dummy;
char *desktop_name;
HWINSTA hwinsta = GetProcessWindowStation ();
char *window_station_name;
DWORD n;
DWORD session_id;
char *display_name;
static const char *display_name_cache = NULL;
typedef BOOL (WINAPI *PFN_ProcessIdToSessionId) (DWORD, DWORD *);
PFN_ProcessIdToSessionId processIdToSessionId;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
if (display_name_cache != NULL)
return display_name_cache;
n = 0;
GetUserObjectInformation (hdesk, UOI_NAME, &dummy, 0, &n);
if (n == 0)
desktop_name = "Default";
else
if (g_once_init_enter (&display_name_cache))
{
n++;
desktop_name = g_alloca (n + 1);
memset (desktop_name, 0, n + 1);
HDESK hdesk = GetThreadDesktop (GetCurrentThreadId ());
char dummy;
char dummy_dword[11];
wchar_t *desktop_name;
HWINSTA hwinsta = GetProcessWindowStation ();
wchar_t *window_station_name;
DWORD n;
DWORD session_id;
wchar_t *display_name_w;
char *display_name;
size_t wchar_size;
size_t display_name_len = 0;
if (!GetUserObjectInformation (hdesk, UOI_NAME, desktop_name, n, &n))
desktop_name = "Default";
n = 0;
GetUserObjectInformation (hdesk, UOI_NAME, &dummy, 0, &n);
wchar_size = sizeof (wchar_t);
if (n == 0)
desktop_name = L"Default";
else
{
n++;
desktop_name = g_alloca ((n + 1) * wchar_size);
memset (desktop_name, 0, (n + 1) * wchar_size);
if (!GetUserObjectInformation (hdesk, UOI_NAME, desktop_name, n, &n))
desktop_name = L"Default";
}
n = 0;
GetUserObjectInformation (hwinsta, UOI_NAME, &dummy, 0, &n);
if (n == 0)
window_station_name = L"WinSta0";
else
{
n++;
window_station_name = g_alloca ((n + 1) * wchar_size);
memset (window_station_name, 0, (n + 1) * wchar_size);
if (!GetUserObjectInformation (hwinsta, UOI_NAME, window_station_name, n, &n))
window_station_name = L"WinSta0";
}
if (!ProcessIdToSessionId (GetCurrentProcessId (), &session_id))
session_id = 0;
/* display_name is in the form of "%ld\\%s\\%s" */
display_name_len = strlen (itoa (session_id, dummy_dword, 10)) + 1 + wcslen (window_station_name) + 1 + wcslen (desktop_name);
display_name_w = g_alloca ((display_name_len + 1) * wchar_size);
memset (display_name_w, 0, (display_name_len + 1) * wchar_size);
swprintf_s (display_name_w, display_name_len + 1, L"%ld\\%s\\%s", session_id, window_station_name, desktop_name);
display_name = g_utf16_to_utf8 (display_name_w, -1, NULL, NULL, NULL);
GDK_NOTE (MISC, g_print ("gdk_win32_display_get_name: %s\n", display_name));
g_once_init_leave (&display_name_cache, display_name);
}
n = 0;
GetUserObjectInformation (hwinsta, UOI_NAME, &dummy, 0, &n);
if (n == 0)
window_station_name = "WinSta0";
else
{
n++;
window_station_name = g_alloca (n + 1);
memset (window_station_name, 0, n + 1);
if (!GetUserObjectInformation (hwinsta, UOI_NAME, window_station_name, n, &n))
window_station_name = "WinSta0";
}
processIdToSessionId = (PFN_ProcessIdToSessionId) GetProcAddress (GetModuleHandle (L"kernel32.dll"), "ProcessIdToSessionId");
if (!processIdToSessionId || !processIdToSessionId (GetCurrentProcessId (), &session_id))
session_id = 0;
display_name = g_strdup_printf ("%ld\\%s\\%s",
session_id,
window_station_name,
desktop_name);
GDK_NOTE (MISC, g_print ("gdk_win32_display_get_name: %s\n", display_name));
display_name_cache = display_name;
return display_name_cache;
}