[已解决]win32程序关于CreateWindow错误

Ayden

我真的看不出来，求大佬指点！
问题:运行CreteWindow返回NULL
代码如下:
#include <Windows.h>

TCHAR title[] = L"test";
TCHAR wincalss[] = L"WindowClass";

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(
    _In_ HINSTANCE hInstance,
    _In_opt_ HINSTANCE hPrevInstance,
    _In_ LPSTR lpCmdLine,
    _In_ int nShowCmd
)
{
    MSG msg = { 0 };
    HWND hwnd;
    WNDCLASSEX wclass = { 0 };

    wclass.cbSize = sizeof(WNDCLASSEX);
    wclass.lpszClassName = wincalss;
    wclass.lpfnWndProc = (WNDPROC)WndProc;

    if (!RegisterClassEx(&wclass))
    {
        return 1;
    }

    hwnd = CreateWindow(wincalss, title, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);

    if (!hwnd)
    {
        return 2;
    }

    ShowWindow(hwnd, nShowCmd);
    UpdateWindow(hwnd);

    while (GetMessage(&msg, hwnd, NULL, NULL))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

        return (int)msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
    switch (Msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
    default:
        break;
    }
    return 0;
}

最佳答案

月排行榜 / 总排行榜

天行健1

2021-6-3 15:46:47

在defauit:后面加上一句return (HWND, UINT, WPARAM, LPARAM);

跳转到最佳答案楼层

Ayden

回调函数出错
LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
    switch (Msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
    default:
        return DefWindowProc(hWnd, Msg, wParam, lParam);
        break;
    }
    return 0;
}

天行健1

开心就好了呀！！我好开心呀！！！

天行健1

在defauit:后面加上一句return (HWND, UINT, WPARAM, LPARAM);