c# - WM_KEYDOWN : how to use it? -

-

I am trying to send a major stroke in an application through postmasses. I am also trying to understand the message using Spy ++ because I can not fully understand its inner workings.

alt text

In this picture, the first item (selected The item was created with a real key stroke made by me. Around it was made with one of the red slippers (below) the following code: 

  WinApi.PostMessage (InsideLobbyHandle, WinApi.WM_KEYDOWN, (int) WinApi.VK_UP, 1);

I think this will have to do with the previous post message (parameter), but I do not know how it really works. I can see ScanCode = 48 in the original key stroke, and in my own 0, the other is faxed and my 0 is. How can I see it?

I can not understand the last parameter is working.

By using the keyboard input, not PostMessage.

You can not do

The keyboard is still in relation to state / async-state:

The SendInput function does not reset the current state of the keyboard. Therefore, if a user's keys are pressed while calling this function, they can interfere with the event that is generated by this function. If you are worried about possible intervention, check the status of the keyboard with GetAsyncKeyState function and correct as needed.

  • The first 16 bits are repeated count
  • The next 8 bits are the scan codes
  • The next bit is 1 for extended keys, 0
  • The next 4 bits are reserved and must be 0
  • The next bit is always 0
  • The next bit is the last key position
  • The last bit is always 0 (for WM_KEYDOWN)

A warning: Postmessage Based on any of the The solution is going to be very brittle.


Comments

Post a Comment

Popular posts from this blog

c# - ListView onScroll event -

-
I am programming a simple C # application, and I need a Scallow event on the list view. So I inherited the original ListView class created in ListviewEx witch. I found out how to locate the scroll message from WinAPI and I modified the WndProc method. Now I have this WndProc: protected override zero WndProc (Ref message message) {base.WndProc (Ref I); If (m.msg == WM_VSCROLL) {onScroll (This, New EventArgs ()); }} But the problem is, I do not know how to know about scrolling information. This data should be in wParam, but there is a LOWORD macro ++ like in C in C # and I switch to find the criteria like SB_ below, SB_ENDSCROLL, SB_PAGEUP etc. there any way Need to change the LOWORD macro from C #? Or any other way to find the necessary parameters about scrolling? You can define the WParam constants as the following: Private const int WM_HSCROLL = 0x114; Private Constant WM_VSCROLL = 0x115; Private contact int SBHOZZ = 0; Private Consultant SB_VERT = 1; Private Con...
Read more

PHP - get image from byte array -

-
I am trying to create a back-end for my mobile application. I am sending the content of an image in the body of the HTTP request (output stream) as a byte array, I want to read this stream of bytes in PHP scripts and take back an image. Can anyone tell me how can I do this? Thank you. You can obtain the request body $ body = Reading from file_get_contents ('php: // input'); What you do with that data Depending on you, you can write the data in a file as you mentioned that this is image data, you can drop the data into the object can do. Another option is to use and load the image.
Read more

Linux Terminal Problem with Non-Canonical Terminal I/O app -

-
I have a small app written in C to run on Linux. Part of the app accepts user-input from keyboard , And it uses non-canonical terminal mode so that it can respond to each keystroke. The section of the code that accepts input is a simple task that is called repeatedly in the loop: char get_input () {char C = 0; Int res = reading (input_tamille, & amp; c, 1); If (RSS == 0) 0 returns; If (res == -1) {/ * snip error handling * /} return c; } It reads a letter from the terminal if there is no input within a given time limit, (c_cc [VTIME] value in the vocabulary structure), read () 0 And get_input () is called again It all works very well, I have recently discovered that if you run this app in a terminal window, and then the app Close the terminal window without ending, the app will not exit Received, but CPU intensive launches into an infinite loop, where the read () returns 0 without waiting continued. So how can I get out of the apple if it runs from the terminal win...
Read more