C++ (Cpp) SDL_Mouse::ShowCursor Examples

Example #1

File: SDL_mouse.c Project: houzhenggang/onscripter-for-iOS-GBK

/* SDL_SetCursor(NULL) can be used to force the cursor redraw,
   if this is desired for any reason.  This is used when setting
   the video mode and when the SDL window gains the mouse focus.
 */
void
SDL_SetCursor(SDL_Cursor * cursor)
{
    SDL_Mouse *mouse = &SDL_mouse;

    /* Set the new cursor */
    if (cursor) {
        /* Make sure the cursor is still valid for this mouse */
        SDL_Cursor *found;
        for (found = mouse->cursors; found; found = found->next) {
            if (found == cursor) {
                break;
            }
        }
        if (!found) {
            SDL_SetError("Cursor not associated with the current mouse");
            return;
        }
        mouse->cur_cursor = cursor;
    } else {
        cursor = mouse->cur_cursor;
    }

    if (cursor && mouse->cursor_shown && !mouse->relative_mode) {
        if (mouse->ShowCursor) {
            mouse->ShowCursor(cursor);
        }
    } else {
        if (mouse->ShowCursor) {
            mouse->ShowCursor(NULL);
        }
    }
}