🚀 go-pugleaf

I want to get the button style of another application, so I've been creating
a simple code which will tell me the style of any window at the current
cursor positiion using WindowFromPoint function.

I get the style of the window using GetWindowLong with GWL_STYLE flags.

As we know, actually every window is created by CreateWindow/CreateWindowEx
function where the window and button style is written in the dwStyle
parameter.

(*)dwStyle parameter is an unsigned integer value (dword).
(*)Win32 API has provide many contants for the window and button style.
(*)We can combine the window/button styles using OR operator.

For example, just say someone had created a button with this style:

WS_CHILD | WS_VISIBLE | WS_OVERLAPPED | WS_TABSTOP | BS_OWNERDRAW.

Detecting an existence of certain window flag (eg. WS_CHILD, WS_VISIBLE,
etc.) is not a problem to me because the window style constants are always
in power of 2, I can do a logical AND operator to check whether a bit is
true or false.

My problem is that many button style constants are not in power of 2,
whereas they are also specified in the dwStyle parameter. These are the
button style constants defined in Windows API :

  BS_PUSHBUTTON = 0;
  BS_DEFPUSHBUTTON = 1;
  BS_CHECKBOX = 2;
  BS_AUTOCHECKBOX = 3;
  BS_RADIOBUTTON = 4;
  BS_3STATE = 5;
  BS_AUTO3STATE = 6;
  BS_GROUPBOX = 7;
  BS_USERBUTTON = 8;
  BS_AUTORADIOBUTTON = 9;
  BS_OWNERDRAW = 11;
  etc.


How can I know mathematically/logically that someone had specified
BS_DEFPUSHBUTTON, BS_CHECKBOX, BS_RADIOBUTTON, etc. in the dwStyle
parameter?

I'm so sorry for my bad English.