minimum win32api sample

d3d11_createdevice.d

//
// add d3d11 to libs in dub.json
//
import core.runtime;
import core.sys.windows.windows;

extern (Windows)
{
    enum D3D_DRIVER_TYPE
    {
        D3D_DRIVER_TYPE_UNKNOWN = 0,
        D3D_DRIVER_TYPE_HARDWARE = (D3D_DRIVER_TYPE_UNKNOWN + 1),
        D3D_DRIVER_TYPE_REFERENCE = (D3D_DRIVER_TYPE_HARDWARE + 1),
        D3D_DRIVER_TYPE_NULL = (D3D_DRIVER_TYPE_REFERENCE + 1),
        D3D_DRIVER_TYPE_SOFTWARE = (
                D3D_DRIVER_TYPE_NULL + 1),
        D3D_DRIVER_TYPE_WARP = (D3D_DRIVER_TYPE_SOFTWARE + 1)
    }

    enum D3D_FEATURE_LEVEL
    {
        D3D_FEATURE_LEVEL_9_1 = 0x9100,
        D3D_FEATURE_LEVEL_9_2 = 0x9200,
        D3D_FEATURE_LEVEL_9_3 = 0x9300,
        D3D_FEATURE_LEVEL_10_0 = 0xa000,
        D3D_FEATURE_LEVEL_10_1 = 0xa100,
        D3D_FEATURE_LEVEL_11_0 = 0xb000,
        D3D_FEATURE_LEVEL_11_1 = 0xb100,
        D3D_FEATURE_LEVEL_12_0 = 0xc000,
        D3D_FEATURE_LEVEL_12_1 = 0xc100
    }

    interface IDXGIAdapter
    {
    }

    interface ID3D11Device
    {
    }

    interface ID3D11DeviceContext
    {
    }

    HRESULT D3D11CreateDevice(IDXGIAdapter pAdapter, D3D_DRIVER_TYPE DriverType,
            HMODULE Software, UINT Flags, const(D3D_FEATURE_LEVEL)* pFeatureLevels,
            UINT FeatureLevels, UINT SDKVersion, ID3D11Device* ppDevice,
            D3D_FEATURE_LEVEL* pFeatureLevel, ID3D11DeviceContext* ppImmediateContext);
}

extern (Windows) LRESULT WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) nothrow
{
    switch (message)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;

    default:
        return DefWindowProcW(hWnd, message, wParam, lParam);
    }
}

extern (Windows) int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpCmdLine, int nCmdShow)
{
    Runtime.initialize();
    scope (exit)
        Runtime.terminate();

    wstring appClass = "ClassName";
    wstring appName = "WindowName";

    WNDCLASSW wndclass;
    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = &WndProc;
    wndclass.cbClsExtra = 0;
    wndclass.cbWndExtra = 0;
    wndclass.hInstance = hInstance;
    wndclass.hIcon = LoadIconW(cast(void*) null, cast(wchar*) IDI_APPLICATION);
    wndclass.hCursor = LoadCursorW(cast(void*) null, cast(wchar*) IDC_ARROW);
    wndclass.hbrBackground = null; //cast(HBRUSH)GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName = null;
    wndclass.lpszClassName = appClass.ptr;
    if (!RegisterClassW(&wndclass))
    {
        return 1;
    }

    auto hWnd = CreateWindowW(appClass.ptr, // window class name
            appName.ptr, // 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, nCmdShow);
    UpdateWindow(hWnd);
    if (hWnd == HWND.init)
    {
        return 2;
    }

    D3D_FEATURE_LEVEL[] levels = [
        D3D_FEATURE_LEVEL.D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL.D3D_FEATURE_LEVEL_11_0,
    ];
    ID3D11Device pDevice;
    D3D_FEATURE_LEVEL level;
    ID3D11DeviceContext pDeviceContext;

    auto result = D3D11CreateDevice(null, D3D_DRIVER_TYPE.D3D_DRIVER_TYPE_HARDWARE,
            null, 0, levels.ptr, cast(uint) levels.length, 7, &pDevice,
            &level, &pDeviceContext);
    if (result != 0)
    {
        return 3;
    }

    // main loop
    MSG msg;
    while (true)
    {
        if (GetMessageW(&msg, null, 0, 0) == 0)
        {
            break;
        }
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return cast(int) msg.wParam;
}

dub.json

{
	"libs": ["user32"] // <- required
}

hello_window.d

import core.runtime;
import core.sys.windows.windows;

extern (Windows) LRESULT WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) nothrow
{
    switch (message)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;

    default:
        return DefWindowProcW(hWnd, message, wParam, lParam);
    }
}

extern (Windows) int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpCmdLine, int nCmdShow)
{
    Runtime.initialize();
    scope (exit)
        Runtime.terminate();

    wstring appClass = "ClassName";
    wstring appName = "WindowName";

    WNDCLASSW wndclass;
    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = &WndProc;
    wndclass.cbClsExtra = 0;
    wndclass.cbWndExtra = 0;
    wndclass.hInstance = hInstance;
    wndclass.hIcon = LoadIconW(cast(void*) null, cast(wchar*) IDI_APPLICATION);
    wndclass.hCursor = LoadCursorW(cast(void*) null, cast(wchar*) IDC_ARROW);
    wndclass.hbrBackground = null; //cast(HBRUSH)GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName = null;
    wndclass.lpszClassName = appClass.ptr;
    if (!RegisterClassW(&wndclass))
    {
        return 1;
    }

    auto hWnd = CreateWindowW(appClass.ptr, // window class name
            appName.ptr, // 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, nCmdShow);
    UpdateWindow(hWnd);
    if (hWnd == HWND.init)
    {
        return 2;
    }

    // main loop
    MSG msg;
    while (true)
    {
        if (GetMessageW(&msg, null, 0, 0) == 0)
        {
            break;
        }
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return cast(int) msg.wParam;
}