how do combination keys with SendMessage()?

[Cambalinho]

using SendMessage() with WM_KEYDOWN, how i can combine keys?

[kbw]

I don't understand the question as such, but if you run Spy, you can see the message sequences and copy it.

[coder777]

I would guess that you mean something like ctrl+A? They are two separate message. When someone presses the keys on the keyboard you receive also two messages.

What you probaly have to do is sending a WM_KEYUP message as well.

[Cambalinho]

Coder777: are you tell me that i need SendMessage() for 'A' and for ctrl keys?
so how i do that steps? is like SendInput()?
(my problem with SendInput() is that i can't choose the window. why these? because when i lose the focus, on window, the SendInput() will have effect on other window)

[coder777]

are you tell me that i need SendMessage() for 'A' and for ctrl keys?

Yes.

so how i do that steps?

Call the SendMessage() two times with the different appropriate messages.

is like SendInput()?

It has some similarities, but you need to pack it in wParam/lParam. See:

https://msdn.microsoft.com/en-us/library/windows/desktop/ms646280%28v=vs.85%29.aspx

Again: WM_KEYDOWN allone might not suffice. You might need WM_KEYUP. Just test it.

[Cambalinho]

i did these function:

void SendInputkey(HWND window, WORD key, WORD shift=0)
{
    if(shift!=0)
        SendMessage(window, WM_KEYDOWN,(WPARAM) shift,0);
    SendMessage(window, WM_KEYDOWN,(WPARAM) key,0);


    SendMessage(window, WM_KEYUP,(WPARAM) key,0);
    if(shift!=0)
        SendMessage(window, WM_KEYUP,(WPARAM) shift,0);
}

for now, i don't get any results :(

[coder777]

I can't say what the problem is, sorry. Maybe it is sending down/up directly one after the other will be ignored?

Maybe the target does not even care for what you send and use other function to determine the state of the keyboard.

Well:

https://blogs.msdn.microsoft.com/oldnewthing/20050530-11/?p=35513/

[Cambalinho]

maybe you have right. i will do a diferent topic for SendInput().
thanks to all

[drowsysaturn]

Another issue might be there is no delay. Maybe try adding Sleep(100); before doing key up. I'm not sure if this helps because I don't know what you will be using this for.

[Cambalinho]

drowsysaturn: i belive you have right. but i continue with same problem:
SendInput() or SendMessage() or PostMessage() only works when the window have focus.
don't make sence that we don't have 1 function that realy calls a keyboard message, when the window don't have focus :(