hid

来源： https://stackoverflow.com/questions/64174004/missing-event-signal

来源： https://stackoverflow.com/questions/17088657/hid-keyboard-descriptor-for-7-keys

问题 I'm struggling with an issue for some days and I can't get it working. I've just started with python and I'm now already facing the biggest problem which I will face in this project. Here's the situation: I have to make a program which scans a barcode. Communicates this to a online service and prints a PDF. This all works fine, but I also want to scan the barcode when the window is "out of focus". So I want to allow people to scan with the barcode scanner while they have the window minimized.

问题 I'm struggling with an issue for some days and I can't get it working. I've just started with python and I'm now already facing the biggest problem which I will face in this project. Here's the situation: I have to make a program which scans a barcode. Communicates this to a online service and prints a PDF. This all works fine, but I also want to scan the barcode when the window is "out of focus". So I want to allow people to scan with the barcode scanner while they have the window minimized.

问题 I have used STM32CubeMX/IDE to generate a USB HID project for the STM32F3DISCOVERY board. The USB BTABLE register is zero, indicating that the BTABLE is at the start of the Packet Memory Area. (I zero the whole PMA at program start, to avoid stale values.) Just before the execution of the __HAL_RCC_USB_CLK_ENABLE macro (in HAL_PCD_MspInit() in usbd_conf.c ) the values of the BTABLE (at index zero onwards, in the PMA are: After that macro is executed, the values are: The macro expands to: do {

问题 I have used STM32CubeMX/IDE to generate a USB HID project for the STM32F3DISCOVERY board. The USB BTABLE register is zero, indicating that the BTABLE is at the start of the Packet Memory Area. (I zero the whole PMA at program start, to avoid stale values.) Just before the execution of the __HAL_RCC_USB_CLK_ENABLE macro (in HAL_PCD_MspInit() in usbd_conf.c ) the values of the BTABLE (at index zero onwards, in the PMA are: After that macro is executed, the values are: The macro expands to: do {

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I am looking for corresponding Linux HID APIs similar to what is mentioned on Microsoft this page : http://msdn.microsoft.com/en-us/library/windows/hardware/jj126202(v=vs.85).aspx Basically functions corresponding to DataMovement : Data Movement The following list identifies HID API that an application can use

问题 There are various ways to retrieve the Windows "Device Name" of a HID device, GetRawInputDeviceInfo with RIDI_DEVICENAME being one way to do it. Given the example name: \?\HID#VID_FEED&PID_DEAD#6&3559c8ea&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd} I'm wondering if there is any documentation whatsoever on what is what in this string? \?\HID#VID_AAAA&PID_BBBB#C&DDDDDD&E&FFFF#{GUID} So the obvious ones are A(VID), B(PID) and the GUID on the end. What I'm wondering is what EXACTLY are C, D, E

问题 I am trying to simulate mouse action via programming. I am not able to do click and drag action reliably. For click and drag I am doing the following actions in the order mentioned below Post left mouse button pressed event at current mouse pointer position (only once) Move the mouse (as mouse down event is already sent, it must act as mouse down and drag, selecting text from the initial mouse postion) Post left mouse button release event to end mouse hold action. In apple applications such

问题 Good morning guys. I bought a LCD embedded display with a resistive touch screen integrated. The TS is interfaceable via USB. I have connected it to a device running Android 4.0.3 and the touch is correctly recognized as externale HID. PROBLEM: the tapping (pressing) is not recognized as selection/confirmation...the only thing that happens, when I tap the screen, is to move the pointer(arrow) in corrispondance of the coordinated of my finger..like I moved a mouse HID without left left