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Code

/+
 + Copyright (c) Charles Petzold, 1998.
 + Ported to the D Programming Language by Andrej Mitrovic, 2011.
 +/

module HelloWin;

import core.runtime;
import std.string;
import std.utf;

auto toUTF16z(S)(S s)
{
    return toUTFz!(const(wchar)*)(s);
}

pragma(lib, "gdi32.lib");
pragma(lib, "winmm.lib");

import win32.mmsystem;
import win32.windef;
import win32.winuser;
import win32.wingdi;

extern(Windows)
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
{
    int result;
    void exceptionHandler(Throwable e) { throw e; }

try
    {
        Runtime.initialize(&exceptionHandler);
        result = myWinMain(hInstance, hPrevInstance, lpCmdLine, iCmdShow);
        Runtime.terminate(&exceptionHandler);
    }
    catch(Throwable o)
    {
        MessageBox(null, o.toString().toUTF16z, "We just caught an exception!", MB_OK | MB_ICONEXCLAMATION);
        result = 0;
    }

return result;
}

int myWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
{
    string appName = "HelloWin";
    HWND hwnd;
    MSG  msg;
    WNDCLASS wndclass;

wndclass.style         = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc   = &WndProc;
    wndclass.cbClsExtra    = 0;
    wndclass.cbWndExtra    = 0;
    wndclass.hInstance     = hInstance;
    wndclass.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wndclass.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = cast(HBRUSH)GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName  = NULL;
    wndclass.lpszClassName = appName.toUTF16z;

if(!RegisterClass(&wndclass))
    {
        MessageBox(NULL, "This program requires Windows NT!", appName.toUTF16z, MB_ICONERROR);
        return 0;
    }

hwnd = CreateWindow(appName.toUTF16z,      // window class name
                         "The Hello Program",  // window caption
                         WS_OVERLAPPEDWINDOW,  // window style
                         CW_USEDEFAULT,        // initial x position
                         CW_USEDEFAULT,        // initial y position
                         CW_USEDEFAULT,        // initial x size
                         CW_USEDEFAULT,        // initial y size
                         NULL,                 // parent window handle
                         NULL,                 // window menu handle
                         hInstance,            // program instance handle
                         NULL);                // creation parameters

ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);

while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

return msg.wParam;
}

extern(Windows)
LRESULT WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    RECT rect;

throw new Exception("Thrown from WndProc");
    
    switch (message)
    {
        case WM_CREATE:
            PlaySound("hellowin.wav", NULL, SND_FILENAME | SND_ASYNC);
            return 0;

case WM_PAINT:
            hdc = BeginPaint(hwnd, &ps);
            scope(exit) EndPaint(hwnd, &ps);

GetClientRect(hwnd, &rect);
            DrawText(hdc, "Hello, Windows!", -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
            return 0;

case WM_DESTROY:
            PostQuitMessage(0);
            return 0;

default:
    }

return DefWindowProc(hwnd, message, wParam, lParam);
}

Compilation output:

/home/c337/c56.d(20): Error: module mmsystem is in file 'win32/mmsystem.d' which cannot be read
import path[0] = /usr/local/include/dmd2

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Author: Guest

Views: 137

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Uploaded: 18.09.12 0:10

Votes: 0

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Compiler: DMD 2.060

Pointer size: m32

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