Win32实现VS风格的Dockable窗口的思路

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于 2022-04-05 12:27:53 发布

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分类专栏： Win32 文章标签： windows

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这个示例展示了如何使用C++和Win32 API创建一个主窗口以及一个子窗口。程序注册了一个窗口类，然后创建了主窗口，并在主窗口内创建了一个名为'Dock窗口'的子窗口。窗口消息处理函数处理了WM_CREATE、WM_LBUTTONDOWN和WM_PAINT等消息。

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#include <windows.h>

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

HWND hMainWnd;

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
	PSTR szCmdLine, int iCmdShow)
{
	static TCHAR szAppName[] = TEXT("Win32DockTest");
	HWND         hwnd;
	MSG          msg;
	WNDCLASS     wndclass;

	wndclass.style = CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra = 0;
	wndclass.cbWndExtra = 0;
	wndclass.hInstance = hInstance;
	wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.lpszMenuName = NULL;
	wndclass.lpszClassName = szAppName;

	if (!RegisterClass(&wndclass))
	{
		MessageBox(NULL, TEXT("This program requires Windows NT!"),
			szAppName, MB_ICONERROR);
		return 0;
	}

	hwnd = CreateWindow(szAppName,                  // window class name
		TEXT("主窗口"), // window caption
		WS_OVERLAPPEDWINDOW,        // window style
		CW_USEDEFAULT,              // initial x position
		CW_USEDEFAULT,              // initial y position
		CW_USEDEFAULT,              // initial x size
		CW_USEDEFAULT,              // initial y size
		NULL,                       // parent window handle
		NULL,                       // window menu handle
		hInstance,                  // program instance handle
		NULL);                     // creation parameters
	hMainWnd = hwnd;

	HWND hDockWnd = CreateWindowEx(0, szAppName,
		"Dock窗口", WS_OVERLAPPEDWINDOW| WS_VISIBLE,//WS_POPUP|WS_BORDER|WS_VISIBLE|WS_CAPTION,
		0, 0, 300, 300,
		hwnd, NULL, hInstance, NULL);

	ShowWindow(hwnd, iCmdShow);
	UpdateWindow(hwnd);

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

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC         hdc;
	PAINTSTRUCT ps;
	RECT        rect;

	switch (message)
	{
	case WM_CREATE:
		return 0;

	case WM_LBUTTONDOWN:
		if (hwnd == hMainWnd)
		{
			MessageBoxA(hwnd, 0, 0, 0);
			return 0;
		}
		break;

	case WM_PAINT:
		hdc = BeginPaint(hwnd, &ps);
		EndPaint(hwnd, &ps);
		return 0;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return DefWindowProc(hwnd, message, wParam, lParam);
}