Search if Key is pressed [RESOLVED]

[sql_lall]

Hi!
I was trying to make an interactive program, and wanted to put this in it:

do stuff...
if(left button is pressed)
{
 change a certain value
}
keep doing stuff

Of course, this is only pseudo-code.
I know about cin>> but the problem is i don't want the program to stop when i check for input.
any ideas?? Thanks

[jim mcnamara]

Use the GetAsyncKeyState() api, the virtual keycode is the only argument. It returns>0 if the key has been pressed at any time since you last called GetAsyncKeyState.

You can put the call to GetAsyncKeyState in a function that you access via SetTimer, or inside the code block that reads the keyboard.

Since people can't push keys faster than 6-8 times per second a timer with a wait of 120ms is adequate. The automatic repeat on keys is usually 6 keys/sec

[SteveCRM]

just note I experienced compatablitity problems with this and windows 98....works perfectly in XP though

[sunburnt]

Also the GetAsyncKeyState() doesn't care if your application had input focus when the key was pressed or not.

[sql_lall]

Thanks for the help.
Just wondering what kind of things i must #include at the start to be able to use it.

[CornedBee]

<windows.h>

Notw also that it is non-portable.