Windows 窗体中的 DirectX9

Question

我需要将 DirectX9 设备集成到 C++ Windows 窗体中 - 我该怎么做？

一方面我得到了我的 DirectX 应用程序......

HWND hWnd;
WNDCLASSEX wc;

ZeroMemory(&wc, sizeof(WNDCLASSEX));

wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = WindowProc;
wc.hInstance = hInstance;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.lpszClassName = "WindowClass";

RegisterClassEx(&wc);

hWnd = CreateWindowEx(NULL, "WindowClass", "Engine",
                      WS_OVERLAPPEDWINDOW, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
                      NULL, NULL, hInstance, NULL);

ShowWindow(hWnd, nCmdShow);

m_D3D = Direct3DCreate9(D3D_SDK_VERSION);

D3DPRESENT_PARAMETERS d3dpp;

ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow = hWnd;
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
d3dpp.BackBufferWidth = SCREEN_WIDTH;
d3dpp.BackBufferHeight = SCREEN_HEIGHT;
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;

// creates device
m_D3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp, &m_Device);

，另一方面我得到了我的 Windows 窗体

Application::EnableVisualStyles();
Application::SetCompatibleTextRenderingDefault(false); 
Application::Run(gcnew Form1());

我如何合并它？

Answer 1

来自此来源的一些信息： http://www.codeproject.com/KB/directx/Irrational_Thinking .aspx

//File: DX9Form.cpp
#include "DX9Form.h"

using namespace Forms_DX9;
using namespace globals;

void DX9Form::initD3D(HWND hHandle)
{

    globals::d3d = Direct3DCreate9(D3D_SDK_VERSION);
    // create the Direct3D interface

    D3DPRESENT_PARAMETERS d3dpp;
    // create a struct to hold various device information

    ZeroMemory(&d3dpp, sizeof(d3dpp)); // clear out the struct for use

    d3dpp.Windowed = true; // program windowed, not fullscreen

    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; // discard old frames

    d3dpp.hDeviceWindow = hHandle;
    // set the window to be used by Direct3D

    // create a device class using this information
    // and information from the d3dpp stuct
    globals::d3d->CreateDevice(D3DADAPTER_DEFAULT,
            D3DDEVTYPE_HAL,
            hHandle,
            D3DCREATE_SOFTWARE_VERTEXPROCESSING,
            &d3dpp,
            &globals::d3ddev);
}

void DX9Form::render(void)
{

    // clear the window to a deep blue
    globals::d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, 
                              D3DCOLOR_XRGB(0, 40, 100), 1.0f, 0);
    globals::d3ddev->BeginScene(); // begins the 3D scene

    // do 3D rendering on the back buffer here
    globals::d3ddev->EndScene(); // ends the 3D scene
    globals::d3ddev->Present(NULL, NULL, NULL, NULL);
    // displays the created frame
}

Answer 2

您可以在表单的 OnLoad() 方法重写或 Load 事件处理程序中初始化 DirectX 代码。您将需要它的 Handle 属性：

protected:
    void OnLoad(EventArgs^ e) override {
        HWND hWnd = (HWND)(void*)this->Handle;
        YourDirectXInitializeFunction(hWnd);
    }