C++ (Cpp) SDL_Mouse::CaptureMouse Examples

Example #1

File: SDL_mouse.c Project: 03050903/Torque3D

int
SDL_CaptureMouse(SDL_bool enabled)
{
    SDL_Mouse *mouse = SDL_GetMouse();
    SDL_Window *focusWindow;
    SDL_bool isCaptured;

    if (!mouse->CaptureMouse) {
        return SDL_Unsupported();
    }

    focusWindow = SDL_GetKeyboardFocus();

    isCaptured = focusWindow && (focusWindow->flags & SDL_WINDOW_MOUSE_CAPTURE);
    if (isCaptured == enabled) {
        return 0;  /* already done! */
    }

    if (enabled) {
        if (!focusWindow) {
            return SDL_SetError("No window has focus");
        } else if (mouse->CaptureMouse(focusWindow) == -1) {
            return -1;  /* CaptureMouse() should call SetError */
        }
        focusWindow->flags |= SDL_WINDOW_MOUSE_CAPTURE;
    } else {
        if (mouse->CaptureMouse(NULL) == -1) {
            return -1;  /* CaptureMouse() should call SetError */
        }
        focusWindow->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
    }

    return 0;
}