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win32: Add gdk_win32_com_clear()

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Like g_clear_object(), but for COM objects.
This commit is contained in:
Benjamin Otte 2024-10-31 14:25:52 +01:00
parent 2a7beb75e8
commit ef839e6505
1 changed files with 23 additions and 0 deletions
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23
gdk/win32/gdkprivate-win32.h
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@ -95,6 +95,29 @@ gboolean _gdk_modal_blocked (GdkSurface *surface);
gboolean gdk_win32_ensure_com (void);
gboolean gdk_win32_ensure_ole (void);
/*
* gdk_win32_com_clear:
* @com_ptr: pointer to a COM object pointer
*
* Clears a reference to a COM object.
*
* `com_ptr` must not be `NULL`.
*
* If the reference is `NULL` then this function does nothing.
* Otherwise, the reference count of the object is decreased
* and the pointer is set to NULL.
*
* Think of this function like g_clear_object() but for COM objects.
*/
#define gdk_win32_com_clear(com_ptr) \
G_STMT_START {\
if (*(com_ptr)) \
{ \
(*(com_ptr))->lpVtbl->Release (*(com_ptr)); \
*(com_ptr) = NULL; \
} \
}G_STMT_END
void _gdk_win32_print_dc (HDC hdc);
char *_gdk_win32_surface_state_to_string (GdkToplevelState state);