how to know information of a control?

[RHL]

I want to know as know the position of a control ( the X,Y coordinates ).
also I want know the height and widht properties
API to use?

[dedndave]

we usually use GetWindowRect
http://msdn.microsoft.com/en-us/library/windows/desktop/ms633519%28v=vs.85%29.aspx

it returns a RECT

Code Select Expand

        .DATA?

rc      RECT <>

        .CODE

        INVOKE  GetWindowRect,hWindow,offset rc
        mov     ecx,rc.right
        mov     edx,rc.bottom
        sub     ecx,rc.left
        sub     edx,rc.top

;ECX = width
;EDX = height

if it is the top window, the RECT values are screen coordinates
if it is a child window, the RECT values are client coordinates

you can use the function for all types of windows - buttons, etc
i don't think it works for menus, though

[MichaelW]

Another possibility is GetWindowInfo, although I don't recall ever testing it on a child window.

And for some purposes GetClientRect might be useful.

[RHL]

thanks u dedndave,MichaelW  :green

[dedndave]

a couple more functions that come in handy...

ClientToScreen
http://msdn.microsoft.com/en-us/library/dd183434%28v=vs.85%29.aspx

ScreenToClient
http://msdn.microsoft.com/en-us/library/dd162952%28v=vs.85%29.aspx