Enumwindow enumeration window

(
1

)
Enumwindow

Function:

Enumerate all top-level windows. After a function is called, The system calls a callback function for each top-level window. The parameters are the window handle and an additional parameter. It can be used in the callback function.
Getwindowtext

Function to get the window title, and then use
Strstr

Function search keyword to determine the existence of a window.

Function prototype:

Bool enumwindows (

Wndenumproc lpenumfunc, // pointer to callback function

Lparam
// Application-defined value

);

Parameter description:

Lpenumfunc

: Point to the defined callback function.

Lparam

: Points to
32

The value passed to the callback function.

Return Value:

Zero is returned if the operation is successful. If the operation is unsuccessful, zero is returned.

Note:

Do not enumerate subwindows.
Getwindow

Enumeration is better.

Other window functions
Findwindow

,
Getforegroundwindow

,
Findwindow

Use the class name or window name to obtain the window handle,
Getforegroundwindow

Return to the front-end window (the current work window of the user ).

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2

)
Enumwindow

Callback Function
Enumwindowsproc

Callback function concept:

In
Windows

In programming, a callback function is not directly called by a function or process in the program, but
Windows

The function called by the operating system. The corresponding parameters defined in the callback function allow
Windows

Directly communicate with the application.

Function prototype:

Bool callback enumwindowsproc (

Hwnd, // handle to parent window

Lparam
// Application-defined value

);

Parameter description:

Hwnd

: The top-level window handle passed by the system.

Lparam

: Additional Parameters

Return Value:

Continue enumeration. The returned value is hypocritical.
True

; The return value for stopping enumeration is
False

.

(
3

)
Win32

Compiled
Enumwindow

Function usage
Instance

. 386

. Model flat, stdcall

Option Casemap: None

Include windows. inc

Include user32.inc

Includelib user32.lib

Include kernel32.inc

Includelib kernel32.lib

Include
Shlwapi. inc

Includelib shlwapi. Lib
; Strstr

. Const

Sztitle
DB
'Ollydbg', 0

Szcaption
DB
'
Result
', 0

Szfindod
DB
'
Target window discovered
', 0

Sztext
DB
'
Enumeration ended
,
If no target is displayed, the target window is not found.
', 0

. Code

;
Define callback Functions

_ Closewnd proc uses ebx edi esi, _ hwnd, _ lparam

Local
@ Szbuffer [1024]: byte
;
Receiving Window title

Invoke iswindowvisible, _ hwnd

. If eax;
Whether the window is visible

Invoke getwindowtext, _ hwnd, ADDR @ szbuffer, sizeof @ szbuffer

Invoke strstri, ADDR @ szbuffer, offset sztitle;
Search for strings in the title
,
Without
I
Case Sensitive

. If eax

Invoke
MessageBox, null, ADDR szfindod, ADDR szcaption, mb_ OK

Invoke
Postmessage, _ hwnd, wm_close, 0, 0;
Close target

. Endif

. Endif

MoV eax, true;
Return
True
,
Enumwindows
Continue to enumerate the next window,
False
Exit Enumeration
.

RET

_ Closewnd endp

Start:

Invoke
Enumwindows, ADDR _ closewnd, null

; Enumwindows
Calls. The system enumerates all top-level windows and calls the callback function once for each window.

Invoke
MessageBox, null, ADDR sztext, ADDR szcaption, mb_ OK

Invoke
Exitprocess, null

End start