asm_dip/toolchain/fasmw17332/EXAMPLES/WIN64/TEMPLATE/TEMPLATE.ASM
2024-11-24 23:13:28 -05:00

83 lines
1.8 KiB
NASM

format PE64 GUI 5.0
entry start
include 'win64a.inc'
section '.text' code readable executable
start:
sub rsp,8 ; Make stack dqword aligned
invoke GetModuleHandle,0
mov [wc.hInstance],rax
invoke LoadIcon,0,IDI_APPLICATION
mov [wc.hIcon],rax
mov [wc.hIconSm],rax
invoke LoadCursor,0,IDC_ARROW
mov [wc.hCursor],rax
invoke RegisterClassEx,wc
test rax,rax
jz error
invoke CreateWindowEx,0,_class,_title,WS_VISIBLE+WS_DLGFRAME+WS_SYSMENU,128,128,256,192,NULL,NULL,[wc.hInstance],NULL
test rax,rax
jz error
msg_loop:
invoke GetMessage,msg,NULL,0,0
cmp eax,1
jb end_loop
jne msg_loop
invoke TranslateMessage,msg
invoke DispatchMessage,msg
jmp msg_loop
error:
invoke MessageBox,NULL,_error,NULL,MB_ICONERROR+MB_OK
end_loop:
invoke ExitProcess,[msg.wParam]
proc WindowProc uses rbx rsi rdi, hwnd,wmsg,wparam,lparam
; Note that first four parameters are passed in registers,
; while names given in the declaration of procedure refer to the stack
; space reserved for them - you may store them there to be later accessible
; if the contents of registers gets destroyed. This may look like:
; mov [hwnd],rcx
; mov [wmsg],edx
; mov [wparam],r8
; mov [lparam],r9
cmp edx,WM_DESTROY
je .wmdestroy
.defwndproc:
invoke DefWindowProc,rcx,rdx,r8,r9
jmp .finish
.wmdestroy:
invoke PostQuitMessage,0
xor eax,eax
.finish:
ret
endp
section '.data' data readable writeable
_title TCHAR 'Win64 program template',0
_class TCHAR 'FASMWIN64',0
_error TCHAR 'Startup failed.',0
wc WNDCLASSEX sizeof.WNDCLASSEX,0,WindowProc,0,0,NULL,NULL,NULL,COLOR_BTNFACE+1,NULL,_class,NULL
msg MSG
section '.idata' import data readable writeable
library kernel32,'KERNEL32.DLL',\
user32,'USER32.DLL'
include 'api\kernel32.inc'
include 'api\user32.inc'