source: Daodan/src/Daodan_Win32.c@ 704

#include <windows.h>

#include "Daodan.h"
#include "Daodan_Win32.h"

#include "Oni.h"

extern HWND onihwnd;

short ONICALL DDrPlatform_Initialize(ONtPlatformData *PlatformData)
{
        WNDCLASSEX WndClass;
        RECT Rect;
        const int Width = 640, Height = 480;
        HINSTANCE temp_Instance = PlatformData->Instance;

        PlatformData->Instance = g_Instance;

        WndClass.cbSize = sizeof(WndClass);
        WndClass.style = CS_VREDRAW | CS_HREDRAW | CS_OWNDC;
        WndClass.cbClsExtra = 0;
        WndClass.cbWndExtra = 0;
        WndClass.hInstance = PlatformData->Instance;
        WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
        WndClass.hIcon = LoadIcon(g_Instance, MAKEINTRESOURCE(103) );
        WndClass.hIconSm = LoadIcon(g_Instance, MAKEINTRESOURCE(103));
        WndClass.hbrBackground = GetStockObject(BLACK_BRUSH);
        WndClass.lpszMenuName = NULL;
        WndClass.lpszClassName = "ONI ";
        WndClass.lpfnWndProc = ONrPlatform_WindowProc;

        RegisterClassEx(&WndClass);
        
        Rect.left = (GetSystemMetrics(SM_CXSCREEN) / 2) - (Width / 2);
        Rect.top = (GetSystemMetrics(SM_CYSCREEN) / 2) - (Height / 2);
        Rect.right = Rect.left + Width;
        Rect.bottom = Rect.top + Height;
        AdjustWindowRect(&Rect, WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_POPUP | WS_TILEDWINDOW , FALSE);
        PlatformData->Window = CreateWindowEx(0, "ONI ", "ONI ",  WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_POPUP | WS_TILEDWINDOW, Rect.left, Rect.top, Rect.right - Rect.left, Rect.bottom - Rect.top, NULL, NULL, PlatformData->Instance, NULL);
        onihwnd = PlatformData->Window;
        ShowWindow(PlatformData->Window, SW_SHOWNORMAL);
        UpdateWindow(PlatformData->Window);

        ShowCursor(FALSE);
        
        // I dont know why this is needed but Oni doesn't init without it.
        ONgPlatformData.Window = PlatformData->Window;
        ONgPlatformData.Instance = PlatformData->Instance;
        
        return 0;
}