windows编程第一个窗口程序

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typedef struct tagWNDCLASSW {
  UINT      style;
  WNDPROC   lpfnWndProc;
  int       cbClsExtra;
  int       cbWndExtra;
  HINSTANCE hInstance;
  HICON     hIcon;
  HCURSOR   hCursor;
  HBRUSH    hbrBackground;
  LPCWSTR   lpszMenuName;
  LPCWSTR   lpszClassName;
} WNDCLASSW, *PWNDCLASSW, *NPWNDCLASSW, *LPWNDCLASSW;

核心的是WNDPROC 和 LPCWSTP lpszClassName 这两个必须有值

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#include<Windows.h>
#include<iostream>
LRESULT CALLBACK WindowProc(   //消息处理函数
	_In_ HWND   hwnd,
	_In_ UINT   uMsg,
	_In_ WPARAM wParam,
	_In_ LPARAM lParam
) {
	switch (uMsg)
	{
	case WM_CREATE:
		MessageBoxW(hwnd, L"窗口创建了", L"提示", MB_OK);
		break;
	case WM_CLOSE:
		MessageBoxW(hwnd, L"窗口关闭了", L"提示", MB_OK);
		DestroyWindow(hwnd);
		PostQuitMessage(0);
		break;
	default:
		break;
	}
	return DefWindowProcW(hwnd,uMsg,wParam,lParam);
}
int WINAPI WinMain(
	HINSTANCE hInstance,
	HINSTANCE hPreInstance,
	LPSTR lpCmdeLine,
	int nCmdShow
) 
{
	//1.创建一个窗口类
	WNDCLASSW myClass = { 0 };
	myClass.lpszClassName = L"51hook";
	myClass.lpfnWndProc = WindowProc;
	//2.注册窗口类
	RegisterClassW(&myClass);
	//3.创建窗口
	HWND hwindow = CreateWindowW(
		myClass.lpszClassName,
 
		L"51hook",
		WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,
		0,
		CW_USEDEFAULT,
		0,
		NULL,
		NULL,
		hInstance,
		0
	);
	//4.显示窗口
	ShowWindow(hwindow, SW_SHOWNORMAL);

	//5.获取消息
	MSG msg = { 0 };
	while (GetMessageW(&msg, 0,0,0)) {
		DispatchMessageW(&msg);//分发消息给消息处理函数
	}

	return 0;
}
Windows
Windows C++

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