Win32 API 窗口无法打开

Win32 API window won't open

本文关键字：API 窗口 Win32      更新时间：2023-10-16

好吧，所以我花了时间去学习Win32 API的一个but做打开窗口，我想出的代码在最后我认为会工作，但没有。我注册了窗口类，做了所有我必须做的事情，但是当我运行它时，什么都没有发生……如果有人能指出我做错了/遗漏了什么，那将是一个很大的帮助。

#include <stdlib.h>
#include <iostream>
#include <Windows.h>
#pragma comment (lib, "wsock32.lib")
#define WNDCLASSNAME "wndclass"
bool quit = false;
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
        case WM_CLOSE:
            DestroyWindow(hwnd);
            break;
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int nshowcmd)
{
    WNDCLASSEX WCE;
    WCE.cbSize = sizeof(WNDCLASSEX);
    WCE.style = CS_HREDRAW|CS_VREDRAW|CS_OWNDC|CS_DBLCLKS;
    WCE.lpfnWndProc = WndProc;
    WCE.cbClsExtra = 0;
    WCE.cbWndExtra = 0;
    WCE.hInstance = hinstance;
    WCE.hIcon = NULL;//LoadImage()
    WCE.hCursor = NULL;//LoadCursor(NULL, IDC_CROSS);
    WCE.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
    WCE.lpszMenuName = NULL;
    WCE.lpszClassName = "KyleWindow";
    WCE.hIconSm = NULL;
    RegisterClassEx(&WCE);
    HWND WindowHandle;
    WindowHandle = CreateWindowEx(WS_OVERLAPPEDWINDOW, "KyleWindow", "Xerus", WS_OVERLAPPEDWINDOW, 0, 0, 500, 500, NULL, NULL, hinstance, NULL);
    ShowWindow(WindowHandle, SW_SHOWNORMAL);
    UpdateWindow(WindowHandle);
    std::cout<<"'Opened' Window"<<std::endl;
    MSG msg;
    while(!quit)
    {
        if(PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE))
        {
            if(msg.message == WM_QUIT)
                quit = true;
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
    return msg.lParam;
}

使用WS_EX_OVERLAPPEDWINDOW作为CreateWindowEx函数的第一个参数(而不是WS_OVERLAPPEDWINDOW，这不是一个有效的扩展的窗口样式)

用WNDCLASS代替WNDCLASSEX

改变:

WNDCLASSEX WCE; to WNDCLASS WCE;

删除线:

WCE.cbSize = sizeof(WNDCLASSEX);

改变:

RegisterClassEx(&WCE);到RegisterClass(&WCE);

函数int WINAPI WinMain必须在函数LRESULT CALLBACK WndProc之前。编译器按顺序读取

相关文章：