GetMessage不想调用WndProc

Question

我试图为DirectX创建一个窗口，但是由于某种原因，当创建窗口时，在按X键后不能关闭它，它就变成了一个僵尸进程。我发现GetMessage循环在按X之后根本没有调用WndProc，我试图找到一个解决方案，但没有成功，所以我想问社区。请告诉我。

#include <Windows.h>

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int 
nCmdShow)
{
    //register windows class
    const wchar_t* pClassName = L"Senko Interaction";
    WNDCLASSEX wc = { 0 };
    wc.cbSize = sizeof(wc);
    wc.style = CS_OWNDC;
    wc.lpfnWndProc = DefWindowProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = nullptr;
    wc.hCursor = nullptr;
    wc.hbrBackground = nullptr;
    wc.lpszMenuName = nullptr;
    wc.lpszClassName = pClassName;
    wc.hIconSm = nullptr;

    RegisterClassEx(&wc);

    //create window instance
    HWND hWnd = CreateWindowEx(
        0,
        pClassName,
        L"Senko Interaction",
        WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU,
        0, 0, 1280, 720,
        nullptr, nullptr, hInstance, nullptr
        );

    ShowWindow(hWnd, SW_SHOW);

    //create message loop
    MSG msg;
    BOOL gResult;
    while ((gResult = GetMessage(&msg, nullptr, 0, 0)) > 0)
    {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
    }

    if (gResult == -1)
    {
        return -1; //return -1
    }
    else
    {
        return msg.wParam; //return 0
    }
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_CLOSE:
        PostQuitMessage(1);
        break;
    }
    return DefWindowProc(hWnd, message, wParam, lParam); //return 1
}

Answer 1

您将窗口类设置为对DefWindowProc()使用WndProc()而不是对lpfnWndProc使用WndProc()，所以为什么从来不调用WndProc()是有意义的：

wc.lpfnWndProc = DefWindowProc; // WRONG

这应该是：

wc.lpfnWndProc = WndProc; // CORRECT