wndproc

Create a native Windows window in JNA and some GetWindowLong with GWL_WNDPROC

女生的网名这么多〃 提交于 2019-12-07 09:01:03
问题 Good day, I have been using JNA for a while to interact with the Windows API and now I am stuck when creating a window. As far as I have done the following: 1. Have created a child window of an existing window and obtained a valid handler to it. 2. Understood that every window in Windows has a non-stop message-dispatch loop. 3. Understood that the best way to include my window in the message-dispatch loop is to use something like the following code (not mine, but that is what I would do as

Sending/Receiving a string through PostMessage

邮差的信 提交于 2019-12-07 01:22:49
问题 Although there are already a few resources online that address this rough topic, I still haven't found an answer that works for me. I desire to have full communication between my VB.net process and my C++ process. I would like to be able to send a string to and from the C++ process, but for the time being I need to achieve: Sending a string to the C++ process, and handling it. This creates a few points that I am uncertain on, but I'll try to keep this as simple as possible... Using the

Change cursor in window caption

时间秒杀一切 提交于 2019-12-07 00:31:34
I have a WinForm and now I need to change the cursor when it's in the windows caption part. I have some code working, it has 2 problems: It also changes the cursor when on the edges (normal resize cursor should be shown). I found out the I need something like this WM_NCHITTEST & HTTOP , but how do I combine that? There's some flicker when moving the mouse. I also tried placing the code below the base.WndProc(ref m); . This is the code I already have: if ((m.Msg == Win32.WM.NCMOUSEMOVE || m.Msg == Win32.WM.NCLBUTTONDOWN || m.Msg == Win32.WM.NCLBUTTONUP || m.Msg == Win32.WM.NCRBUTTONDOWN || m

Winforms Control Stealing WndProc WM_NCHITEST

a 夏天 提交于 2019-12-06 14:46:53
I am building a form in C# that uses the WM_NCHITEST event in the WndProc function. It works perfectly with no controls on the page, but when I added a panel to the page my WndProc function stopped receiving WM_NCHITEST events. Any idea what I can do to stop this? UPDATE : My window in normally borderless, but when I do run it in bordered mode the WM_NCHITTEST event is called when the cursor mouses over the window frame, leaving me to think that the form size control I have (Chromium Embedded Web Browser) is intercepting the messages. Any way to wrest WndProc control back from a unrully window

WndProc in my WPF app not 'handling' WM_INPUT event

北慕城南 提交于 2019-12-06 01:06:16
[Edit] Here's what I've gleaned about mouse input handling thus far. Note that I've learned this via a bunch of different sources and via experimentation, so don't take this as gospel: 1) Mouse event originates with mouse move 2) SetWindowsHookEx(WH_MOUSE_LL) handler LowLevelMouseProc sees event first 3) OS/app framework handles Mouse event at some high level (mouse cursor moves) 4) WM_INPUT event is picked up by app event queue and handled by WndProc (although handling at this time does not stop mouse cursor from moving in step 3). 5) Message is dispatched via ComponentDispatcher 6)

C# Form Control Move

坚强是说给别人听的谎言 提交于 2019-12-05 23:24:50
Is there anyway to control where you can move a form? So if i move a form, it can only be moved on the vertical axis and when i try to move it horizontally, nothing happens. I dont want a buggy implementation like locationchanged or move event and poping it back inline. I no there is a way using something like a WndProc override but after searching for a while, i couldnt find anything. Please help You would most likely want to override WndProc and handle the WM_MOVING message. According to MSDN : The WM_MOVING message is sent to a window that the user is moving. By processing this message, an

Create a native Windows window in JNA and some GetWindowLong with GWL_WNDPROC

半城伤御伤魂 提交于 2019-12-05 14:18:57
Good day, I have been using JNA for a while to interact with the Windows API and now I am stuck when creating a window. As far as I have done the following: 1. Have created a child window of an existing window and obtained a valid handler to it. 2. Understood that every window in Windows has a non-stop message-dispatch loop. 3. Understood that the best way to include my window in the message-dispatch loop is to use something like the following code (not mine, but that is what I would do as well): final LONG_PTR prevWndProc = new LONG_PTR(User32.INSTANCE.GetWindowLong(hwnd, User32.GWL_WNDPROC))

Sending/Receiving a string through PostMessage

≡放荡痞女 提交于 2019-12-05 04:25:34
Although there are already a few resources online that address this rough topic, I still haven't found an answer that works for me. I desire to have full communication between my VB.net process and my C++ process. I would like to be able to send a string to and from the C++ process, but for the time being I need to achieve: Sending a string to the C++ process, and handling it. This creates a few points that I am uncertain on, but I'll try to keep this as simple as possible... Using the following function declaration in VB ; Declare Function PostMessage Lib "user32" Alias "PostMessageA" ( _

Why would Windows hooks not receive certain messages?

非 Y 不嫁゛ 提交于 2019-12-05 04:17:56
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? Partial header: namespace InputManager { class CInputManager { HWND m_Window; HHOOK m_WndProcHook; HHOOK

Where to call base.WndProc() or base.DefWndProc()?

旧时模样 提交于 2019-12-01 19:25:50
问题 I have some questions regarding overriding the WndProc method of a Windows Form / NativeWindow. What exactly is the difference between WndProc and DefWndProc (edit: I thought it is called "DefaultWndProc" before)? I can only override WndProc, but what is DefWndProc for, which I can call anytime? And where to call base.WndProc in my overridden method? Or should I call DefWndProc instead? The following positions came into my mind: protected override void WndProc(ref Message m) { // 1st: I call