setwindowshookex

问题 The following snippet is meant to display the message when the user types a key. Even when the focus is not on the application. But there seems to be a problem with the following code. It doesn't call the function registered in the hook-chain with the windows. I guess the problem is with HINSTANCE hInst . How should I modify the below code so that I am able to see the message as the user taps a key. // Global Variables static HHOOK handleKeyboardHook = NULL; HINSTANCE hInst = NULL; void

问题 I want to create a good library for keyboard hook. I use a method SetWindowsHookEx and I have noticed that method hookProc, which should be called at any system KeyDown event, is not executed if the main thread of my app is bussy. I think the hook shold be made so, that the other thread would be responsible for it. Is that possible? How can I do it? 回答1: Microsoft help page of LowLevelKeyboardProc mentions that If the hook procedure times out, the system passes the message to the next hook.

问题 Microsoft does not recommend DirectInput for keyboard and mouse input. As such, I've written an input manager class that uses SetWindowsHookEx to hook into WndProc and GetMsg. I believe the hooks are set appropriately, though they look to be the cause of various issues. Neither my WndProc nor GetMsg hooks receive any of the messages that the actual WndProc is receiving. My input manager never receives the WM_INPUT, WM_ BUTTON , WM_MOUSEWHEEL, and WM_KEY* messages that it needs. What gives?

问题 In a few words: blocking Win up after Win + Tab makes Windows think Win is still down, so then pressing S with the Win key up for example will open the search charm rather than just type "s"... until the user presses Win again. Not blocking it means the Windows Start menu will show up. I'm in a conundrum! I have no trouble hooking into shortcuts using Alt + Tab using LowLevelKeyboardHook , or Win + Some Ubounded Key using RegisterHotKey . The problem happens only with the Win key using

问题 In a Delphi XE application I am trying to set up a global hook to monitor focus changes. The hook is created in a dll: focusHook := SetWindowsHookEx( WH_CBT, @FocusHookProc, HInstance, 0 ); // dwThreadId (the last argument) set to 0 should create a global hook In the same dll I have the hook procedure that posts a message to the host app window: function FocusHookProc( code : integer; wParam: WPARAM; lParam: LPARAM ) : LResult; stdcall; begin if ( code < 0 ) then begin result :=

问题 I am using SetWindowsHookEx() to create a keyboard hook. The creation seems to be successful but the procedure which is registered never gets called. Is there something I am doing wrong? #region Windows API Functions Declarations [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] private static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId); [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention

问题 What's the correct way to convert a message from SetWindowsHookEx with WH_KEYBOARD_LL into a useful representation of the key pressed? I'm aware this will most likely involve understanding the mappings of the local keyboard. (NB: I'm only considering when a key is pressed, not when it's released for simplicity) Broadly speaking there seem to be three scenarios: Special key pressed (Ctrl/Escape/Shift/Alt) Standard key pressed ( A-Z , 0-9 , etc... Note that a and A both read as A ) Some hard to

问题 I'm trying to figure out if there's a way to use SetWindowsHookEx and be able to affect apps that are run with Admin rights on Vista, with UAC enabled. This is an app that will need to add a small button to the caption bar of other windows to enable some multi-monitor-aware handling. I would have thought this couldn't be done, but I've seen one app that appears to do this. As far as I can tell, this other apps is not being run with Admin rights, and yet it can affect all apps in the system,

问题 I am trying to set windows hooks in my program to an external EXE. This will be used to monitor resizing/minimizing of the window, so I can resize my program similarly, docking to the window. How do I get around error codes 1428 and 126 below? When calling SetWindowsHookEx with a null hMod, I was getting this error 1428 . I get the same error if passing the current module (instead of IntPtr.Zero), which it seems to get correctly, as so: IntPtr module = PInvoke.GetModuleHandle(null); [...]

问题 I have written an application to hook some procedure onto a new process to monitor mouse down events and to disable mouse down events on the new process. As of now, I am able to capture to mouse down events coming to this process and I am trying to disable all mouse down events as a POC. This is what I am doing currently in the hook procedure. extern "C" __declspec(dllexport) LRESULT __stdcall meconnect(int code, WPARAM wParam, LPARAM lParam) { if (code >= 0) { LPMSG msg = (LPMSG)lParam; if