Initialize a directx form instance

# Include "windows. h"
# Include "windowsx. h"
# Include "d3d9. h"
# Include "d3dx9. h"
# Include "tchar. h"

HWND g_hwnd;
LPDIRECT3D9 g_d3d9 = NULL;
LPDIRECT3DDEVICE9 g_d3d9device = NULL;

LRESULT initgame (void );
LRESULT Render (void );

Lresult callback wndproc (HWND hwnd, UINT message, WPARAM wpara, LPARAM lpara)
{
Switch (message)
{
Case WM_DESTROY:
PostQuitMessage (0 );
Break;
}
Return DefWindowProc (hwnd, message, wpara, lpara );
}

Int WINAPI WinMain (_ in HINSTANCE instance, _ in_opt HINSTANCE hPrevInstance, _ in_opt LPSTR lpCmdLine, _ in int nShowCmd)
{
WNDCLASSEX wndclass;
ZeroMemory (& wndclass, sizeof (wndclass ));
Wndclass. cbSize = sizeof (wndclass );
Wndclass. lpszClassName = _ T ("game ");
Wndclass. lpfnWndProc = wndproc;
Wndclass. hInstance = instance;
Wndclass. style = CS_HREDRAW | CS_VREDRAW;
Wndclass. hCursor = LoadCursor (instance, IDC_ARROW );
Wndclass. hbrBackground = GetStockBrush (RGB (0, 0, 0 ));
 
RegisterClassEx (& wndclass );
G_hwnd = CreateWindow (_ T ("game"), _ T ("Directx example"), WS_OVERLAPPEDWINDOW, 100,100,400,600, NULL, NULL, instance, NULL );
ShowWindow (g_hwnd, SW_SHOW );
UpdateWindow (g_hwnd );
MSG msg;
Initgame ();
While (true)
{
If (PeekMessage (& msg, NULL, 0, 0, PM_REMOVE ))
{
If (msg. message = WM_QUIT)
Break;
TranslateMessage (& msg );
DispatchMessage (& msg );
}
Render ();
}

Return 0;

}

LRESULT Render ()
{
G_d3d9device-> Clear (0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB (255,0, 0), 1.0f, 0 );
G_d3d9device-> Present (NULL, NULL );

Return S_ OK;
}
LRESULT initgame ()
{
D3DCAPS9 d3dcaps;
ZeroMemory (& d3dcaps, sizeof (d3dcaps ));
D3DPRESENT_PARAMETERS pa;
ZeroMemory (& pa, sizeof (pa ));
Long v;

G_d3d9 = Direct3DCreate9 (D3D_SDK_VERSION );
G_d3d9-> GetDeviceCaps (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, & d3dcaps );

If (d3dcaps. DevCaps & d3ddevcaps_hwtransformanlight) // whether the hardware supports illumination (hardware vertex processing)
{
V = D3DCREATE_HARDWARE_VERTEXPROCESSING;
}
Else
{
V = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
}
 
Pa. customized wed = true; // whether it is customized
Pa. enableautodepthstenpencil = true; // automatically create depth/template Buffer
Pa. AutoDepthStencilFormat = D3DFMT_D16; // depth/degree format
Pa. BackBufferCount = 1; // Number of backend buffer Surfaces
Pa. BackBufferFormat = D3DFMT_A8R8G8B8; // backup buffer surface pixel format
Pa. SwapEffect = D3DSWAPEFFECT_DISCARD; // specifies the rules of the surface in the switching chain.
Pa. FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT; // update rate
Pa. MultiSampleType = D3DMULTISAMPLE_NONE; // full-screen anti-aliasing type
Pa. MultiSampleQuality = 0; // quality grade of full screen anti-aliasing

If FAILED (g_d3d9-> CreateDevice (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, g_hwnd, v, & pa, & g_d3d9device ))
{
Return E_FAIL;
}

 
 

}