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问题： 新人学习DirectX时遇到了一个问题，求前辈指导（求助帖）
描述:
#include
#include
#include
#include
using namespace std;
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib,"d3dx9.lib")
const string Apptitle = "DirectX Surface Program ";
#define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000 ) ? 1: 0)
#define screenw 1024
#define screenh 768
LPDIRECT3D9 d3d = NULL;
LPDIRECT3DDEVICE9 d3ddev = NULL;
LPDIRECT3DSURFACE9 backbuffer = NULL;
LPDIRECT3DSURFACE9 surface = NULL;
bool gameover = false;
bool game_init(HWND hwnd)
{
d3d = Direct3DCreate9(D3D_SDK_VERSION);
if (d3d == NULL)
{
MessageBox(hwnd, "error creqating d3d", "error", MB_OK);
return false;
}
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferCount = 1;
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
d3dpp.BackBufferWidth = screenw;
d3dpp.BackBufferHeight = screenh;
d3dpp.hDeviceWindow = hwnd;
d3d->CreateDevice(
D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL, hwnd,
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp, &d3ddev
);
if (!d3ddev)
{
MessageBox(hwnd, "error creating d3ddev ", " error", MB_OK);
return false;
}
srand((unsigned int)time(NULL));
d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
d3ddev->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &backbuffer);
HRESULT result = d3ddev->CreateOffscreenPlainSurface(
100, 100,
D3DFMT_X8R8G8B8,
D3DPOOL_DEFAULT,
&surface,
NULL
);
if (result != D3D_OK) return false;
return true;
}
void game_run(HWND hwnd)
{
if (!d3ddev) return;
if (d3ddev->BeginScene())
{
int r = rand() % 255;
int g = rand() % 255;
int b = rand() % 255;
d3ddev->ColorFill(surface, NULL, D3DCOLOR_XRGB(r, g, b));
RECT rect;
rect.left = rand() % screenw/2;
rect.right = rect.left + rand() % screenw / 2 ;
rect.top = rand() % screenh;
rect.bottom = rect.top + rand() % screenh / 2;
d3ddev->StretchRect(surface, NULL, backbuffer, &rect, D3DTEXF_NONE);
d3ddev->EndScene();
d3ddev->Present(NULL, NULL, NULL, NULL);
}
if (KEY_DOWN(VK_ESCAPE))
PostMessage(hwnd, WM_DESTROY, 0, 0);
}
void game_end(HWND hwnd)
{
if (surface) surface->Release();
if (d3ddev) d3ddev->Release();
if (d3d) d3d->Release();
}
LRESULT WINAPI WinProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg)
{
case WM_DESTROY:
gameover = true;
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, msg, wparam, lparam);
}
int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow)
{
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)WinProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hinstance;
wc.hIconSm = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = "mainWindowClass";
wc.hIconSm = NULL;
RegisterClassEx(&wc);
HWND window = CreateWindow(" mianWindowClass", Apptitle.c_str(), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
screenw, screenh, (HWND)NULL, (HMENU)NULL, hinstance, (LPVOID)NULL);
if (!window )
{
MessageBox(window, " window error", "error", MB_OK);
return 0;
}
ShowWindow(window, ncmdshow);
UpdateWindow(window);
if (!game_init(window))
{
MessageBox(window, " init error", "error", MB_OK);
return 0;
}
MSG msg;
while (!gameover)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
game_run(window);
}
//game_end(window);
return msg.wParam;
}
应该是CreateWindow出现了错误，返回的总是0，所以下面无法编译下去（新人的推测），百度了几次也没解决，求前辈赐教
解决方案1: 纠正上帖：
wc.hIconSm = NULL;
应改为
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
以上介绍了“ 新人学习DirectX时遇到了一个问题，求前辈指导（求助帖）”的问题解答，希望对有需要的网友有所帮助。
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