[ros-dev] NtUserCreateWindowEx parameters

[Jeetu Golani]

Hi there,

I've been snooping into the internals of Win XP and have setup a win32sys SDT 
hook on the NtUserCreateWindowEx function. 

I'd written sometime back to the list stating that the x,y,nWidth and nHeight 
parameters were showing values I couldn't understand - negative values et al. 
Since then I realized that this had to do with the fact that the parameter 
positions in the prototype I was using seemed to be in a different order 
(discovered a window.c file from this project on koders.com and was using 
this prototype). I think this could possibly be because maybe the ros team 
has been looking at a version of windows that isn't XP (possible??)..dunno

Anyways the parameter ordering I've deduced seems to be :

NtUserCreateWindowEx(DWORD dwExStyle,PUNICODE_STRING 
UnsafeClassName,PUNICODE_STRING UnsafeWindowName,DWORD dwUnknown1,DWORD 
dwStyle,LONG x, LONG y,LONG nWidth, LONG nHeight,HWND 
hWndParent,HMENU,hMenu,HINSTANCE hInstance,LPVOID lpParam,DWORD 
dwShowMode,DWORD dwUnknown2)

This seems to be correct with regards the 
dwExStyle,dwStyle,x,y,nWidth,nHeight,hWndParent.hMenu,hInstance,lpParam 
arguments.

I'm still not able to verify the rest. My immediate concern though are the 
UnsafeClassName and UnsafeWindowName arguments.

I'm trying to print out these values...or test out what these values 
hold...but can't seem to get anywhere....don't even know for sure if these 
are UNICODE_STRING structure vals or LPCTSTR.

I'd like to be able to retrieve/interpret the ClassName and 
WindowName......any help would be appreciated.

Bye for now