參考資訊:
https://board.flatassembler.net/
繪畫的顏色設定可以分成Brush、Pen兩種,Brush代表填充的顏色,Pen則是線條的顏色
main.asm
include "head.asm" section ".text" code readable executable proc WndProc hWnd, uMsg, wParam, lParam local hdc:DWORD local brush:DWORD local ps:PAINTSTRUCT mov eax, [uMsg] cmp eax, WM_PAINT je .handle_paint cmp eax, WM_CLOSE je .handle_close cmp eax, WM_DESTROY je .handle_destroy invoke CallWindowProc, [pDefWndProc], [hWnd], [uMsg], [wParam], [lParam] jmp .finish .handle_paint: lea eax, [ps] invoke BeginPaint, [hWnd], eax mov [hdc], eax invoke CreateSolidBrush, 0ffh mov [brush], eax lea eax, [ps] add eax, PAINTSTRUCT.rcPaint invoke FillRect, [hdc], eax, [brush] lea eax, [ps] invoke EndPaint, [hWnd], eax invoke DeleteObject, [brush] xor eax, eax jmp .finish .handle_close: invoke DestroyWindow, [hWnd] xor eax, eax jmp .finish .handle_destroy: invoke PostQuitMessage, 0 xor eax, eax jmp .finish .finish: ret endp proc WinMain hInst, hPrevInst, CmdLine, CmdShow local msg:MSG invoke CreateWindowEx, WS_EX_LEFT, WC_DIALOG, szName, \ WS_OVERLAPPEDWINDOW or WS_VISIBLE, 0, 0, 300, 300, NULL, NULL, NULL, NULL mov [hWin], eax invoke SetWindowLong, [hWin], GWL_WNDPROC, WndProc mov [pDefWndProc], eax @@: lea eax, [msg] invoke GetMessage, eax, NULL, 0, 0 cmp eax, 0 je @f lea eax, [msg] invoke DispatchMessage, eax jmp @b @@: mov eax, [msg.wParam] ret endp start: invoke GetModuleHandle, NULL mov [hInstance], eax invoke GetCommandLine mov [pCommand], eax stdcall WinMain, [hInstance], NULL, [pCommand], SW_SHOWNORMAL invoke ExitProcess, eax
Line 24~25:產生一個紅色的Brush
Line 26~28:將可視區域填入紅色
Line 32:釋放資源
完成