extern GetModuleHandleA
extern LoadCursorA
extern RegisterClassA
extern CreateWindowExA
extern GetMessageA
extern DispatchMessageA
extern TranslateMessage
extern ExitProcess
extern PostQuitMessage
extern DefWindowProcA
section .data
MSG dq 0 ;+0 hWnd
dd 0 ;+8 message
dd 0 ;padding for next
wParam dq 0 ;+10 wParam
dq 0 ;+18 lParam
dd 0 ;+20 time
dd 0 ;+24 1st part of point structure
dd 0 ;+28 2nd part of point structure
dd 0 ;padding to bring total size to 48 bytes
WNDCLASS dd 1h+2h+40h ;+0 window class style (CS_VREDRAW+CS_HREDRAW+CS_CLASSDC)
dd 0 ;padding for next
dq WndProcTable ;+8 pointer to Window Procedure
dd 0 ;+10 no. of extra bytes to allocate after structure
dd 0 ;+14 no. of extra bytes to allocate after window instance
hInst dq 0 ;+18 handle to instance containing window procedure
dq 0 ;+20 handle to the class icon
hCursor dq 0 ;+28 handle to the class cursor
dq 6 ;+30 identifies the class background brush (6=COLOR_WINDOW+1)
dq 0 ;+38 pointer to resource name for class menu
dq win_class_name ;+40 pointer to string for window class name
win_class_name db 'simplewindow',0 ;string holding name of window class
win_id dq 0
but_id dq 0
kopf db '64 bit program', 0
class_button db 'button', 0
button_kopf db 'hjh', 0
mbt db 'this is only a test', 0
mbc db 'achtung', 0
section .text
global start
start:
sub rsp, 0x8
xor rcx, rcx
call GetModuleHandleA
mov [hInst], rax
mov rcx, 0
mov rdx, 32512
call LoadCursorA
mov [hCursor], rax
mov rcx, WNDCLASS
sub rsp, 0x20
call RegisterClassA
add rsp, 0x20
;creating main window
mov rcx, 0
mov rdx, win_class_name
mov r8, kopf
mov r9, 0x10000000+0x00080000+0x00020000
push 0
push qword[hInst]
push 0
push 0
push 512
push 512
push 256
push 256
sub rsp, 0x20
call CreateWindowExA
add rsp, 0x20
add rsp, 0x40
mov [win_id], rax
zyklus:
mov rcx, MSG
mov rdx, 0
mov r8, 0
mov r9, 0
sub rsp, 20h
call GetMessageA
add rsp, 20h
or rax, rax
jz fertig
mov rcx, MSG
call TranslateMessage
mov rcx, MSG
call DispatchMessageA
jmp zyklus
fertig:
mov rcx, [wParam]
call ExitProcess
WndProcTable:
sub rsp, 0x8
cmp edx, 0x01 ; see if it is wm_create message
jne quit
; creating button
mov rcx, 0
mov rdx, class_button
mov r8, button_kopf
mov r9, 0x40000000+0x10000000 ; child +visible
push 0
push qword[hInst]
push 0
push qword[win_id]
push 20
push 50
push 30
push 30
sub rsp, 0x20
call CreateWindowExA
add rsp, 0x20
add rsp, 0x40
mov [but_id], rax
jmp alles
quit:
cmp edx, 0x02
jne weiter
xor rcx, rcx
call PostQuitMessage
weiter:
sub rsp,20h
call DefWindowProcA
add rsp,20h
alles:
add rsp, 0x8
ret
但是如果在创建主窗口代码后放置创建按钮代码 一切正常，但在处理wm_create mrssage时失败了
nasm -f win64 first.nasm -o first，obj 首先是golink，obj user32.dll kernel32.dll gdi32.dll
按钮不会出现或根本不会创建 怎么了？ 我想知道这段代码出了什么问题 是否有人注意到此代码中的任何错误 我不知道在哪里可以找到错误
现在它已经解决了。 wm_create有效句柄在rcx寄存器中后，主窗口句柄在创建按钮时无效（它在wndproctable中作为第一个参数传递）所以右边是push rcx
答案 0 :(得分：0)
现在它已经解决了。 wm_create有效句柄在rcx寄存器中后，主窗口句柄在创建按钮时无效（它在wndproctable中作为第一个参数传递）所以右边是push rcx