![]() Resetting the device will disconnect and then reconnect the wireless connection. Look on the bottom of the wireless device for a Reset button. Make sure there’s no dirt blocking keys or sensors. Make sure that the cables on your device aren't damaged in any way.Ĭheck any battery-powered devices to see if they are fully charged or have fresh batteries. If it’s still not working, try removing the USB hub and plugging the device directly into a USB port on the PC. If you use a USB hub between the device and the PC, make sure the hub has power. Try using a different USB port on your PC. Unplug USB cables and wait for a little while for the device driver to be unloaded by Windows, and then plug the device back in. Having trouble with a device? Make sure everything is connected properly, the device has power, and that it’s set up correctly. Note : The keyboard predefined values are final integers located in the Keyboard class.Note: For issues with touchpads, see Fix touchpad problems in Windows. Note : The keyboard predefined values are located into a (static) enumeration of the Keyboard class.įor example, Keyboard.CONTROL corresponds to the ctrl key stroke. The wb_keyboard_disable function should be used to stop the keyboard readings. ![]() The function can be called up to 7 times to detect up to 7 simultaneous keys pressed. If no key is currently pressed, the function will return -1.Ĭalling the wb_keyboard_get_key function a second time will return either -1 or the key code of another key which is currently simultaneously pressed. In this case, the returned value is the result of a binary OR between one of WB_KEYBOARD_SHIFT, WB_KEYBOARD_CONTROL or WB_KEYBOARD_ALT and the ASCII code (or the special value) of the pressed key according to which modifier key was pressed simultaneously. ![]() However, if a modifier key was pressed, the ASCII code (or special value) can be obtained by applying a binary AND between to the WB_KEYBOARD_KEY mask and the returned value. If no modifier (shift, control or alt) key is pressed, the key code is the ASCII code of the corresponding key or a special value (e.g., for the arrow keys). The returned value, if non-negative, is a key code corresponding to a key currently pressed. Note that the first key will be available only after the first sampling period elapsed.Īfter that, values can be read by calling the wb_keyboard_get_key function repeatedly until this function returns -1. The sampling_period parameter is expressed in milliseconds, and defines how frequently readings are updated. You may have to click inside the 3D window, so that it gets selected (e.g., active) and the key press events can be sent to the controller program.įirst, it is necessary to enable keyboard input by calling the wb_keyboard_enable function. These functions allow a controller program to read keys pressed on the computer keyboard when the 3D window of Webots is selected and the simulation is running. Period = wb_keyboard_get_sampling_period() WB_KEYBOARD_KEY, WB_KEYBOARD_SHIFT, WB_KEYBOARD_CONTROL, WB_KEYBOARD_ALT wb_keyboard_enable( sampling_period) WB_KEYBOARD_NUMPAD_RIGHT, WB_KEYBOARD_NUMPAD_DOWN, WB_KEYBOARD_NUMPAD_END, WB_KEYBOARD_NUMPAD_HOME, WB_KEYBOARD_NUMPAD_LEFT, WB_KEYBOARD_NUMPAD_UP, ![]() WB_KEYBOARD_RIGHT, WB_KEYBOARD_DOWN, WB_KEYBOARD_PAGEUP, WB_KEYBOARD_PAGEDOWN, WB_KEYBOARD_END, WB_KEYBOARD_HOME, WB_KEYBOARD_LEFT, WB_KEYBOARD_UP,
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