ASM Community

Hi everyone i need some help with my calculator project that i am doing.  if i make the buttons using the following code how do i detect that a specific button has been clicked on
for example the code makes the buttons 1 , 2 and 3

the code
  .elseif uMsg == WM_CREATE

        jmp @F
          Butn1 db "&1",0
          Butn2 db "&2",0
          Butn3 db "&3",0
        @@:

        invoke PushButton,ADDR Butn1,hWin,350,30,100,25,500
        invoke PushButton,ADDR Butn2,hWin,350,60,100,25,500
        invoke PushButton,ADDR Butn3,hWin,350,90,100,25,500

PushButton proc lpText:DWORD,hParent:DWORD,
                a:DWORD,b:DWORD,wd:DWORD,ht:DWORD,ID:DWORD

    szText btnClass,"BUTTON"

    invoke CreateWindowEx,0,
            ADDR btnClass,lpText,
            WS_CHILD or WS_VISIBLE,
            a,b,wd,ht,hParent,ID,
            hInstance,NULL

    ret

PushButton endp

can anyone explain how this would work so if they click on 1 i can detect it

thanks