LPARAM with WM_CHAR

Ok, I've been looking at a tutorial for keyboard input... and at the end, it says this:

Code:

This following is the BIT values breakdown of the 32-bit LPARAM -- Be sure to check
	MSDN for any changes

	0 - 15	Specifies the repeat count for the current message. The value is the number of
			times the keystroke is auto-repeated as a result of the user holding down the key

	16 - 23	Specifies the scan code. The value depends on the original equipment
			manufacturer (OEM)
			
	   24	Specifies whether the key is an extended key, such as the right-hand alt and 
			ctrl keys that appear on an enhanced 101-key or 102-key keyboard. The value is 1 
			if it is an extended key otherwise it's 0
			
	25 - 28 Reserved

	   29	The context code. The value is 1 if the alt key is held down while 
			the key is pressed otherwise it's 0
			
	   30	The previous key state. The value is 1 if the key is down
			before the message is sent, or it is 0 if the key is up

	   31	The transition state. The value is 1 if the key is being released, 
			or it's 0 if the key is being pressed

The only thing I really need from the LPARAM is the last part, about the key being pressed/released, but how do I get its value? (I mean, do I typecast to a bool or something, or use some macro?)

all you need to look at is WPARAM as it contains the key code of the character that was pressed.

Code:

if(wParam == 'A')
{
   // A/a was pressed
}

hope this helps
U.

I got that far, but I want to be able to figure out when the key is released. I actually started out trying to use WM_KEYDOWN/KEYUP, but I couldn't figure out how the virtual-key codes worked. Then I looked at WM_CHAR and it has that flag thingee telling if the message was generated because the key was being pressed or released... I tried doing this:

Code:

bool* test = (bool*)&lParam;
if(test[31] == 0)
       (...)

It didn't bomb, but when the message was generated, test[31] was always 0.

Do you know how I might find out what key it is when a WM_KEYDOWN message pops up?

yeah.. for keys a-z and A-Z they are the same as the actual ascii for uppercase chars.

so when you can the WM_KEYUP/DOWN messages... test for 'A', 'B', 'C' etc.... all the other keys have a VK_* constant ...that should get you going...

good luck!
U.

Ahhhh, it has to be uppercase eh? That would explain a lot. I kept trying lowercase

your welcome!


manners will get you more help in the future mate.

Oh, I forgot - thanks! (I thought I usually say thanks anyways?... oh well.)

no probs