is there a way to determine if a window is a 'conventional' window, rather than a say control?

Question

Recently I was asking around how to detect when a new window is created, and a user on Reddit (plankoe) gave me a solution I was very happy with. I have been using their solution for a few days now, and it has just one slight issue with it.

onNewWin(){                                  ;the callback function             
    WinSet, Style, -0xC40000, % "ahk_id" hwnd       ;removes the title bar/ caption on any newly created window
}

The call back onNewWin will apply WinSet to any window, regardless if its a control, a right click context menu, or windows 11 HUD windows, like the volume controls window. This is leading to broken functionality.

I would like to only apply the style to windows that have the standard windows title bar/caption (ones with minus, square and X, or just an X), but identifying this kind of window is proving to be difficult. I have tried using the winGet command to figure a common style between these kinds of windows, but every window returns a different style number. I also looked at the style table and found nothing applicable.

I should be clear, the call back stuff I mentioned above is to just give context for what I am trying to do, and my sole concern is trying to identify windows that have a title bar/caption (ones with minus, square and X, or just an X), so the problem can be reduced to:

x::
    if (<standard/conventional widnow>)                ;<----- figuring out this 
        WinSet, Style, -0xC40000, % "ahk_id" hwnd       ;remove the title bar/ caption
    return

Answer 1

; Press F1  to apply that style 
; to any standard/conventional widnow under the mouse pointer:

F1::
    MouseGetPos,,, WinUnderMouse
    If NOT IsWindow(WinExist("ahk_id" . WinUnderMouse))
        return
    WinSet, Style, -0xC40000, % "ahk_id" WinUnderMouse 
return

;------------------------------------------------------------------------
; Check whether the target window is a standard/conventional widnow
;------------------------------------------------------------------------
;;; https://learn.microsoft.com/en-us/windows/win32/winmsg/extended-window-styles
IsWindow(hWnd){
    WinGet, dwStyle, Style, ahk_id %hWnd%
    if ((dwStyle&0x08000000) || !(dwStyle&0x10000000)) {    ;; Window with a style that doesn't activate (WS_EX_NOACTIVATE 0x08000000L), or not visible (WS_VISIBLE 0x10000000 )
    WinGetClass, szClass, ahk_id %hWnd% ; this is an exception for TApplication Classes
    if (szClass != "TApplication")
        return false
    }
    WinGet, dwExStyle, ExStyle, ahk_id %hWnd%
    if (dwExStyle & 0x00000080) {   ; The window is a floating toolbar (WS_EX_TOOLWINDOW 0x00000080)
        return false
    }
    WinGet, dwExStyle, ExStyle, ahk_id %hWnd%
    if (dwExStyle & 0x00000008) {   ; to exclude Always-On-top windows (WS_EX_TOPMOST 0x00000008)
        return false
    }
    WinGetClass, szClass, ahk_id %hWnd% ; this is an exception for TApplication Classes
    if (szClass = "TApplication") {
        return false
    }
    if IsWindowCloaked(hwnd){   ; exclude "Cloaked" windows
        return false
    }
    return true
}

; Cloaked windows 
IsWindowCloaked(hwnd) {
    return DllCall("dwmapi\DwmGetWindowAttribute", "ptr", hwnd, "int", 14, "int*", cloaked, "int", 4) >= 0
        && cloaked
return
}

You can remove or add more exceptions (styles or classes) in the above function.