I ran some tests but I don't think anything really useful came out of it.

GetLastError ( ) doesn't return any data and none of the DialogBox ( ) functions return -1.

But what do you mean with "what value do you use for IDC_LOGINBUTTON"? IDC_LOGINBUTTON is the ID of the button on IDD_FORMLOGIN.

does the second dialog box even return anything (when run on your laptop)? and what does the first box return? what I meant by 'the value' is in your resource header i.e. #define IDC_LOGINBUTTON 1000. but the way your code is in the last post, it's fine. should work on a PC or laptop (least I don't recall seeing anything ever on MSDN about special dialog treatment for laptops). could be a common controls type thing though... can you post the RC file? what happens when you gut all the controls (except for the button ones) out of the second dialog?