VB API - GetAsyncKeyState

[kman1985]

i'm using the API Function "GetAsyncKeyState", got info from www.vbapi.com , and I wanted to know how to use it with Virtual-Key-Codes, all I know how to do, is use it with ASCII characters, doesn't really work with special Keys, like <> and <>. On the site there are some constants assigning something, I think, but I don't know what they do, this is my 1st API, Please Help.

THANKS

[[xan]]

I don't code in VB ; however, you can use

GetAsyncKeyState(VK_LCONTROL) - left control

GetAsyncKeyState(VK_RCONTROL) - right control

GetAsyncKeyState(VK_LSHIFT) - left shift

GetAsyncKeyState(VK_RSHIFT) - right shift

[Dessimat0r]

Or you can try a superior programming enviroment such as Delphi 6.

[kman1985]

xan_san,

on vbapi.com there are constants for those, where do you declare the constants, or do you have to? THANKS

[drolkram]

The VK_LSHIFT/VK_RSHIFT constants only work under Windows NT/2000/XP. 95/98/ME only have VK_SHIFT, VK_CONTROL and VK_MENU (Alt) and can't distinguish left and right.

[kman1985]

i could find out whitch OS they're using and do whatever works for their OS.

[drolkram]

If you don't need to distinguish between left/right shift keys then you can still use GetAsyncKeyState under 9x. If you still need help with that, then which version of VB are you using?

However, If you do need that level of detail about which keys the user is pressing then you should use DirectX's input API. It's full of VB examples. Windows' API's for keyboard input are designed for writing word processors and are more concerned with getting the correct character to appear than providing technical information.

[[xan]]

kman1985, i don't know vb but in vc++ those constants are declared in winuser.h and you don't need to declare them

[kman1985]

with Virtual Key Codes, could u find out if what is pressed is an uppercase or lowercase?

[[xan]]

You can use the character code 'A' or 'a' i guess.