Archive for 7月 15th, 2012

  1. Hello, Win32 GUI(Python) World!

    Posted on 7月 15th, 2012 by cx20

    Win32 GUI(Python)

    Win32 アプリケーションは Windows 標準 API である Win32 API を使用した Windows アプリケーションである。
    以下は Python にて ctypes ライブラリを使用した Win32 GUI アプリケーション の例となっている。

    ソースコード

    hello.py
    raw download
    import win32con
import sys
from ctypes import *
 
WNDPROC = WINFUNCTYPE(c_long, c_int, c_uint, c_int, c_int)
 
NULL            = c_int(0)
 
WM_PAINT        = win32con.WM_PAINT
WM_DESTROY      = win32con.WM_DESTROY
CS_HREDRAW      = win32con.CS_HREDRAW
CS_VREDRAW      = win32con.CS_VREDRAW
IDI_APPLICATION = win32con.IDI_APPLICATION
IDC_ARROW       = win32con.IDC_ARROW
WHITE_BRUSH     = win32con.WHITE_BRUSH
WS_OVERLAPPEDWINDOW = win32con.WS_OVERLAPPEDWINDOW
CW_USEDEFAULT   = win32con.CW_USEDEFAULT
SW_SHOWNORMAL   = win32con.SW_SHOWNORMAL
SW_SHOW         = win32con.SW_SHOW
SW_SHOWDEFAULT  = win32con.SW_SHOWDEFAULT
 
GetModuleHandle = windll.kernel32.GetModuleHandleA
BeginPaint      = windll.user32.BeginPaint
EndPaint        = windll.user32.EndPaint
PostQuitMessage = windll.user32.PostQuitMessage
DefWindowProc   = windll.user32.DefWindowProcA
CreateWindowEx  = windll.user32.CreateWindowExA
CreateWindowEx.argtypes = [c_int, c_char_p, c_char_p, c_int, c_int, c_int, c_int, c_int, c_int, c_int, c_int, c_int]
LoadIcon        = windll.user32.LoadIconA
LoadCursor      = windll.user32.LoadCursorA
RegisterClass   = windll.user32.RegisterClassA
ShowWindow      = windll.user32.ShowWindow
UpdateWindow    = windll.user32.UpdateWindow
GetMessage      = windll.user32.GetMessageA
TranslateMessage = windll.user32.TranslateMessage
DispatchMessage = windll.user32.DispatchMessageA
TextOut         = windll.gdi32.TextOutA
GetStockObject  = windll.gdi32.GetStockObject
 
class POINT(Structure):
    _fields_ = [('x', c_long),
                ('y', c_long)]
 
class MSG(Structure):
    _fields_ = [('hwnd', c_int),
                ('message', c_uint),
                ('wParam', c_int),
                ('lParam', c_int),
                ('time', c_int),
                ('pt', POINT)]
 
class WNDCLASS(Structure):
    _fields_ = [('style', c_uint),
                ('lpfnWndProc', WNDPROC),
                ('cbClsExtra', c_int),
                ('cbWndExtra', c_int),
                ('hInstance', c_int),
                ('hIcon', c_int),
                ('hCursor', c_int),
                ('hbrBackground', c_int),
                ('lpszMenuName', c_char_p),
                ('lpszClassName', c_char_p)]
 
class RECT(Structure):
    _fields_ = [('left', c_long),
                ('top', c_long),
                ('right', c_long),
                ('bottom', c_long)]
 
class PAINTSTRUCT(Structure):
    _fields_ = [('hdc', c_int),
                ('fErase', c_int),
                ('rcPaint', RECT),
                ('fRestore', c_int),
                ('fIncUpdate', c_int),
                ('rgbReserved', c_char * 32)]
 
def WndProc(hwnd, message, wParam, lParam):
    strMessage = "Hello, Win32 GUI(Python) World!"
    if message == WM_PAINT:
        ps = PAINTSTRUCT()
        hdc = BeginPaint( hwnd, byref(ps) )
        TextOut( hdc, 0, 0, strMessage, len(strMessage) )
        EndPaint( hwnd, byref(ps) )
        return 0
    elif message == WM_DESTROY:
        PostQuitMessage(0)
        return 0
 
    return DefWindowProc(hwnd, message, wParam, lParam)
 
def WinMain():
    wndclass               = WNDCLASS()
    wndclass.style         = CS_HREDRAW | CS_VREDRAW
    wndclass.lpfnWndProc   = WNDPROC(WndProc)
    wndclass.cbClsExtra    = 0
    wndclass.cbWndExtra    = 0
    wndclass.hInstance     = GetModuleHandle(0)
    wndclass.hIcon         = LoadIcon(0, IDI_APPLICATION)
    wndclass.hCursor       = LoadCursor(0, IDC_ARROW)
    wndclass.hbrBackground = GetStockObject(WHITE_BRUSH)
    wndclass.lpszMenuName  = 0
    wndclass.lpszClassName = "helloWindow"
 
    RegisterClass(byref(wndclass))
 
    hwnd = CreateWindowEx(
        0,
        wndclass.lpszClassName,
        "Hello, World!",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        640,
        480,
        0,
        0,
        wndclass.hInstance,
        0)
 
    ShowWindow(hwnd, SW_SHOWDEFAULT)
    UpdateWindow(hwnd)
 
    msg = MSG()
    pMsg = pointer(msg)
 
    while GetMessage( pMsg, NULL, 0, 0 ) != 0:
        TranslateMessage(pMsg)
        DispatchMessage(pMsg)
 
    return msg.wParam
 
if __name__=='__main__':
    sys.exit(WinMain())

    実行方法

    C:¥> python hello.py

    実行結果

    +------------------------------------------+
|Hello, World!                    [_][~][X]|
+------------------------------------------+
|Hello, Win32 GUI(Python) World!           |
|                                          |
|                                          |
|                                          |
|                                          |
|                                          |
|                                          |
|                                          |
|                                          |
|                                          |
+------------------------------------------+