别人说很简单`小弟第1次接触不是很理解~请高手们帮忙理解下~!
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.386
.model flat, stdcall
option casemap :none
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Include 文件定义
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
include windows.inc
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Equ 等值定义
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
ICO_MAIN equ 1000
DLG_MAIN equ 1000
IDC_COUNTER equ 1001
IDC_PAUSE equ 1002
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 数据段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.data?
hInstance dd ?
hWinMain dd ?
hWinCount dd ?
hWinPause dd ?
dwOption dd ?
F_PAUSE equ 0001h
F_STOP equ 0002h
F_COUNTING equ 0004h
.const
szStop db '停止计数',0
szStart db '计数',0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 代码段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.code
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_Counter proc
or dwOption,F_COUNTING
and dwOption,not (F_STOP or F_PAUSE)
invoke SetWindowText,hWinCount,addr szStop
invoke EnableWindow,hWinPause,TRUE
xor ebx,ebx
.while ! (dwOption & F_STOP)
.if !(dwOption & F_PAUSE)
inc ebx
invoke SetDlgItemInt,hWinMain,IDC_COUNTER,ebx,FALSE
.endif
.endw
invoke SetWindowText,hWinCount,addr szStart
invoke EnableWindow,hWinPause,FALSE
and dwOption,not (F_COUNTING or F_STOP or F_PAUSE)
ret
_Counter endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_ProcDlgMain proc uses ebx edi esi hWnd,wMsg,wParam,lParam
local @dwThreadID
mov eax,wMsg
;********************************************************************
.if eax == WM_COMMAND
mov eax,wParam
.if ax == IDOK
.if dwOption & F_COUNTING
or dwOption,F_STOP
.else
call _Counter
.endif
.elseif ax == IDC_PAUSE
xor dwOption,F_PAUSE
.endif
;********************************************************************
.elseif eax == WM_CLOSE
invoke EndDialog,hWnd,NULL
;********************************************************************
.elseif eax == WM_INITDIALOG
push hWnd
pop hWinMain
invoke GetDlgItem,hWnd,IDOK
mov hWinCount,eax
invoke GetDlgItem,hWnd,IDC_PAUSE
mov hWinPause,eax
;********************************************************************
.else
mov eax,FALSE
ret
.endif
mov eax,TRUE
ret
_ProcDlgMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
start:
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke DialogBoxParam,eax,DLG_MAIN,NULL,offset _ProcDlgMain,NULL
invoke ExitProcess,NULL
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
end start
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上面是全部代码~
小弟把不懂的写出来`希望那位前辈帮助理解一下~!
dwOption dd ?
F_PAUSE equ 0001h
F_STOP equ 0002h
F_COUNTING equ 0004h 自定义标志 0001 0002 0004
---------------------------------------------------------------
.if eax == WM_COMMAND
mov eax,wParam
.if ax == IDOK
.if dwOption & F_COUNTING
or dwOption,F_STOP
.else
call _Counter
.endif
.elseif ax == IDC_PAUSE
xor dwOption,F_PAUSE
.endif 这里是判断按下消息 然后判断通知码是不是按下开始按钮`是的话就执行下面2句
.if dwOption & F_COUNTING
or dwOption,F_STOP 我不理解这2句的意思`
.elseif ax == IDC_PAUSE
xor dwOption,F_PAUSE 这个判断是不是暂停按钮 然后下面的异或有什么用?
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然后就是_Counter子程序里的一些运算` 如何算我知道`但是为什么要这样算我不理解~请前辈们指教!
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