Dでの開発にはd-ideを使用しています。
コンパイラ バージョンでは、プロジェクトの Windows テンプレートが魅力的にD 2.059
コンパイルされて実行されます。
コンパイラ バージョンでは、プロジェクトのWindowsD 2.060
テンプレートがコンパイルされず、エラーが発生します。
main.d(41): Error: cannot implicitly convert expression (& WindowProc) of type extern
(Windows) int function(void* hWnd, uint message, uint wParam, int lParam) to extern
(Windows) int function(void*, uint, uint, int) nothrow
以下はコードです、あなたの提案に感謝します。
// Example code taken from winsamp.d (Listed under D examples)
import core.runtime;
import std.c.windows.windows;
import std.string;
enum IDC_BTNCLICK = 101;
enum IDC_BTNDONTCLICK = 102;
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 e)
{
MessageBoxA(null, e.toString().toStringz, "Error", MB_OK | MB_ICONEXCLAMATION);
result = 0;
}
return result;
}
int myWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
{
string caption = "The Hello Program";
string className = "DWndClass";
HWND hWnd, btnClick, btnDontClick;
MSG msg;
WNDCLASS wndclass;
wndclass.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = &WindowProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIconA(null, IDI_APPLICATION);
wndclass.hCursor = LoadCursorA(null, IDC_CROSS);
wndclass.hbrBackground = cast(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = null;
wndclass.lpszClassName = className.toStringz;
if (!RegisterClassA(&wndclass))
{
MessageBoxA(null, "Couldn't register Window Class!", caption.toStringz, MB_ICONERROR);
return 0;
}
hWnd = CreateWindowA(className.toStringz, // window class name
caption.toStringz, // window caption
WS_THICKFRAME |
WS_MAXIMIZEBOX |
WS_MINIMIZEBOX |
WS_SYSMENU |
WS_VISIBLE, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
600, // initial x size
400, // initial y size
HWND_DESKTOP, // parent window handle
null, // window menu handle
hInstance, // program instance handle
null); // creation parameters
if (hWnd is null)
{
MessageBoxA(null, "Couldn't create window.", caption.toStringz, MB_ICONERROR);
return 0;
}
btnClick = CreateWindowA("BUTTON", "Click Me", WS_CHILD | WS_VISIBLE,
0, 0, 100, 25, hWnd, cast(HMENU)IDC_BTNCLICK, hInstance, null);
btnDontClick = CreateWindowA("BUTTON", "DON'T CLICK!", WS_CHILD | WS_VISIBLE,
110, 0, 100, 25, hWnd, cast(HMENU)IDC_BTNDONTCLICK, hInstance, null);
ShowWindow(hWnd, iCmdShow);
UpdateWindow(hWnd);
while (GetMessageA(&msg, null, 0, 0))
{
TranslateMessage(&msg);
DispatchMessageA(&msg);
}
return msg.wParam;
}
int* p;
extern(Windows)
LRESULT WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDC_BTNCLICK:
if (HIWORD(wParam) == BN_CLICKED)
MessageBoxA(hWnd, "Hello, world!", "Greeting",
MB_OK | MB_ICONINFORMATION);
break;
case IDC_BTNDONTCLICK:
if (HIWORD(wParam) == BN_CLICKED)
{
MessageBoxA(hWnd, "You've been warned...", "Prepare to GP fault",
MB_OK | MB_ICONEXCLAMATION);
*p = 1;
}
break;
default:
}
break;
}
case WM_PAINT:
{
enum text = "D Does Windows";
PAINTSTRUCT ps;
HDC dc = BeginPaint(hWnd, &ps);
scope(exit) EndPaint(hWnd, &ps);
RECT r;
GetClientRect(hWnd, &r);
HFONT font = CreateFontA(80, 0, 0, 0, FW_EXTRABOLD, FALSE, FALSE,
FALSE, ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, "Arial");
HGDIOBJ old = SelectObject(dc, cast(HGDIOBJ) font);
SetTextAlign(dc, TA_CENTER | TA_BASELINE);
TextOutA(dc, r.right / 2, r.bottom / 2, text.toStringz, text.length);
DeleteObject(SelectObject(dc, old));
break;
}
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
break;
}
return DefWindowProcA(hWnd, message, wParam, lParam);
}