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7.13 glutButtonBoxFuncglutButtonBoxFunc sets the dial & button box button callback for the current window. Usage void glutButtonBoxFunc(void (*func)(int button, int state));
Description glutButtonBoxFunc sets the dial & button box button callback for the current window. The dial & button box button callback for a window is called when the window has dial & button box input focus (normally, when the mouse is in the window) and the user generates dial & button box button presses. The button parameter will be the button number (starting at one). The number of available dial & button box buttons can be determined with glutDeviceGet(GLUT_NUM_BUTTON_BOX_BUTTONS). The state is either GLUT_UP or GLUT_DOWN indicating whether the callback was due to a release or press respectively. Registering a dial & button box button callback when a dial & button box device is not available is ineffectual and not an error. In this case, no dial & button box button callbacks will be generated. Passing NULL to glutButtonBoxFunc disables the generation of dial & button box button callbacks. When a new window is created, no dial & button box button callback is initially registered.
![]() ![]() ![]() ![]() ![]() Next: 7.14 glutDialsFunc Up: 7 Callback Registration Previous: 7.12 glutSpaceballButtonFunc Mark Kilgard Fri Feb 23 08:05:02 PST 1996 |