The MASM Forum

Hi,

QuoteForeground activation permission is like love: You can't steal it, it has to be given to you.

SetForegroundWindow.

Do you have any examples to prove it?
Thank you in advance.

Regard.

Hello,

More info about the topic :

https://devblogs.microsoft.com/oldnewthing/20241128-00/?p=110586

https://devblogs.microsoft.com/oldnewthing/20090220-00/?p=19083

Hi,Vortex
Thank you.

I'v still not fully grasped the Blog. here the codes would prove that it has to be stolen to each other.
"1" instance:
DlgProc proc hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM

    mov eax,uMsg
    .if eax == WM_INITDIALOG
        invoke    LoadIcon,hInstance,ICO_MAIN
        invoke    SendMessage,hWnd,WM_SETICON,ICON_BIG,rax
       
        invoke    SetTimer,hWnd,IDC_TIMERID,3000,NULL
       
    .elseif eax == WM_COMMAND
        mov    rcx,wParam
        .if    cx == IDC_EXIT
            invoke    SendMessage,hWnd,WM_CLOSE,NULL,NULL
        .endif
    .elseif eax == WM_TIMER
       
        invoke  FindWindow,NULL,CStr("Test Foreground '2'")
        mov    Remote_hWnd,rax
        invoke  SetForegroundWindow,Remote_hWnd

    .elseif eax == WM_CLOSE
        invoke    KillTimer,hWnd,IDC_TIMERID
        invoke    EndDialog,hWnd,0
    .else
        mov rax,FALSE
        ret
    .endif
    mov rax,TRUE
    ret

DlgProc endp

WinMainCRTStartup Proc
    invoke    GetModuleHandle,NULL
    mov    hInstance,rax
    invoke    DialogBoxParam,hInstance,IDD_DIALOG,0,addr DlgProc,0
    invoke    ExitProcess,NULL
WinMainCRTStartup Endp

"2" instance:
DlgProc proc hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM

    mov eax,uMsg
    .if eax == WM_INITDIALOG
        invoke    LoadIcon,hInstance,ICO_MAIN
        invoke    SendMessage,hWnd,WM_SETICON,ICON_BIG,rax
        invoke    SetTimer,hWnd,IDC_TIMERID,3000,NULL

    .elseif eax == WM_COMMAND
        mov    rcx,wParam
        .if    cx == IDC_EXIT
            invoke    SendMessage,hWnd,WM_CLOSE,NULL,NULL
        .endif
    .elseif eax == WM_TIMER
       
        invoke  FindWindow,NULL,CStr("Test Foreground '1'")
        mov    Remote_hWnd,rax
        invoke  SetForegroundWindow,Remote_hWnd
    .elseif eax == WM_CLOSE
        invoke    KillTimer,hWnd,IDC_TIMERID
        invoke    EndDialog,hWnd,0
    .else
        mov rax,FALSE
        ret
    .endif
    mov rax,TRUE
    ret

DlgProc endp

WinMainCRTStartup Proc
    invoke    GetModuleHandle,NULL
    mov    hInstance,rax
    invoke    DialogBoxParam,hInstance,IDD_DIALOG,0,addr DlgProc,0
    invoke    ExitProcess,NULL
WinMainCRTStartup Endp

regard.