从零到一编写一个Windows程序

话不多说，代码如下：

#include<Windows.h>
#include<stdio.h>


LRESULT CALLBACK WinSunProc(
	HWND hwnd,
	UINT uMsg,
	WPARAM wParam,
	LPARAM lParam
);

int WINAPI WinMain(
	HINSTANCE hInstance,
	HINSTANCE hPrevInstance,
	LPSTR lpCmdLine,
	int nCmdShow
)
{
	WNDCLASS wndcls;
	wndcls.cbClsExtra = 0;
	wndcls.cbWndExtra = 0;
	wndcls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
	wndcls.hCursor = LoadCursor(NULL, IDC_CROSS);
	wndcls.hIcon = LoadIcon(NULL, IDI_ERROR);
	wndcls.hInstance = hInstance;
	wndcls.lpfnWndProc = WinSunProc;
	wndcls.lpszClassName = "yangshuohao";
	wndcls.lpszMenuName = NULL;
	wndcls.style = CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&wndcls);

	HWND hwnd;
	hwnd = CreateWindow("yangshuohao", "揭梦娴是猪", WS_OVERLAPPEDWINDOW, 0, 0
		, 600, 400, NULL, NULL, hInstance, NULL);

	ShowWindow(hwnd, SW_SHOWNORMAL);
	UpdateWindow(hwnd);

	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}

LRESULT CALLBACK WinSunProc(
	HWND hwnd,
	UINT uMsg,
	WPARAM wParam,
	LPARAM lParam
)
{
	switch (uMsg)
	{
	case WM_CHAR:
		char szChar[20];
		sprintf_s(szChar, sizeof(szChar), "char code is %d", wParam);
		MessageBox(hwnd, szChar, "char", 0);
		break;
	case WM_LBUTTONDOWN:
		MessageBox(hwnd, "揭梦娴是猪", "揭梦娴是猪", 0);
		HDC hdc;
		hdc = GetDC(hwnd);
		TextOut(hdc, 200, 180, "揭梦娴是猪", strlen("揭梦娴是猪"));
		ReleaseDC(hwnd, hdc);
		break;
	case WM_PAINT:
		HDC hDC;
		PAINTSTRUCT ps;
		hDC = BeginPaint(hwnd, &ps);
		TextOut(hDC,200,150,"揭梦娴是猪",strlen("揭梦娴是猪"));
		EndPaint(hwnd, &ps);
		break;
	case WM_CLOSE:
		if (IDYES == MessageBox(hwnd, "揭梦娴真的是猪？", "猪", MB_YESNO))
		{
			DestroyWindow(hwnd);
		}
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd, uMsg, wParam, lParam);
	}

	return 0;
}

结果如下：

输入字符结果如下：

按下鼠标左键，结果如下：

关掉窗口，结果如下：