WndProc在win32程序中报错

#include<windows.h> LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrveIntance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAPPName[] = TEXT("MyWindows"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style = CS_HREDRAW | CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hInstance; wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szAPPName; if (!RegisterClass(&wndclass)) { MessageBox(NULL, TEXT("RESULT"), szAPPName, MB_OK | MB_ICONWARNING); return 0; } hwnd = CreateWindow(szAPPName, TEXT("空间"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd, iCmdShow); while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WhdProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { HDC hdc; PAINTSTRUCT ps; RECT rect; switch (message) { case WM_PAINT: hdc = BeginPaint(hwnd, &ps); GetClientRect(hwnd, &rect); DrawText(hdc, TEXT("大家好"), -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER); EndPaint(hwnd, &ps); return 0; } return DefWindowProc(hwnd, message, wParam, lParam); }