sending backspace to erase a character

iam using to postmessage api with vbkeyback to erase the charactes typed and post some other character in my local language software.

PostMessage(wndHndl, WM_CHAR, Asc(Chr(8)), Keybrd_Delay)


the problem is i can't send backspace to all windows applications. some applications like excel and coreldraw didnot take backspace key with postmessage api.

how can i erase the characters i typed.......

please helpme

You could try using SendKeys if you make the other window the active one...

If the above suggestion doesn't work, you could look into doing the following.
Hook the target window and trap all WM_CHAR messages. When one of the offending characters arrives, replace it with the correct one.

I've written some code that makes this pretty simple to do. Take a look at it here.