__asm
    {
            mov         esi, esp
            push        0
            mov         eax, WindowName
            push        eax
            push        0
            push        0
            call        FindWindowExA
            mov         find, eax
            cmp         find, 0
            je          no_find
            ; process found
            mov         esi, esp
            push        20h
            push        offset MyTitle
            push        offset MyText
            push        0
            call        MessageBoxA
            cmp         esi, esp
            jmp         find_window + 88h
            no_find :
            mov         esi, esp
            push        20h
            push        offset MyTitle
            push        offset MyTextFail
            push        0
            call        MessageBoxA
            cmp         esi, esp
    }