diff --git a/src/app.c b/src/app.c

index d4b2ab54..4eeae94e 100644

--- a/src/app.c

+++ b/src/app.c

@@ -689,7 +689,7 @@ static int resizeWatcher_(void *user, SDL_Event *event) {

         SDL_Event u = { .type = SDL_USEREVENT };

         u.user.code = command_UserEventCode;

         u.user.data1 = strdup("theme.changed");

- u.user.windowID = SDL_GetWindowID(d->window->win);

+ u.user.windowID = id_Window(d->window);

         dispatchEvent_Widget(d->window->root, &u);

     }

#endif

@@ -782,7 +782,7 @@ void postRefresh_App(void) {

     SDL_Event ev;

     ev.user.type     = SDL_USEREVENT;

     ev.user.code     = refresh_UserEventCode;

- ev.user.windowID = get_Window() ? SDL_GetWindowID(get_Window()->win) : 0;

+ ev.user.windowID = id_Window(get_Window());

     ev.user.data1    = NULL;

     ev.user.data2    = NULL;

     SDL_PushEvent(&ev);

@@ -807,7 +807,7 @@ void postCommand_App(const char *command) {

 }

 ev.user.type     = SDL_USEREVENT;

 ev.user.code     = command_UserEventCode;

- ev.user.windowID = get_Window() ? SDL_GetWindowID(get_Window()->win) : 0;

+ ev.user.windowID = id_Window(get_Window());

 ev.user.data1    = strdup(command);

 ev.user.data2    = NULL;

 SDL_PushEvent(&ev);

diff --git a/src/ui/window.c b/src/ui/window.c

index 7c16cf09..5101ed9b 100644

--- a/src/ui/window.c

+++ b/src/ui/window.c

@@ -1042,6 +1042,10 @@ void setCursor_Window(iWindow *d, int cursor) {

 d->pendingCursor = d->cursors[cursor];

}



+uint32_t id_Window(const iWindow *d) {

+ return d && d->win ? SDL_GetWindowID(d->win) : 0;

+}

+

iInt2 rootSize_Window(const iWindow *d) {

 return d->root->rect.size;

}

diff --git a/src/ui/window.h b/src/ui/window.h

index bdd4d008..8be8b88d 100644

--- a/src/ui/window.h

+++ b/src/ui/window.h

@@ -60,6 +60,7 @@ void setUiScale_Window (iWindow *, float uiScale);

void setFreezeDraw_Window (iWindow *, iBool freezeDraw);

void setCursor_Window (iWindow *, int cursor);



+uint32_t id_Window (const iWindow *);

iInt2 rootSize_Window (const iWindow *);

float uiScale_Window (const iWindow *);

iInt2 coord_Window (const iWindow *, int x, int y);