Windows SDK 实现不规则窗口介绍

Posted 2020-07-03 渐行渐远....那些错过的青春

不规则窗口在程序界面设计中能提供非常好的用户体验，以下是我程序运行时的效果图：

以下是代码,注意需要修改一些简单的位置，如资源ID，项目的头文件等，这些是根据你创建的win32程序的项目名改变的，我的项目名为RgnWindow。

View Row Code

1	// RgnWindow.cpp : Defines the entry point for the application.
2	//
3
4	#include "stdafx.h"
5	#include "RgnWindow.h"
6	#include <comdef.h>
7
8
9	#define ULONG_PTR ULONG
10	#include <gdiplus.h>
11	using namespace Gdiplus;
12	#pragma comment(lib, "gdiplus.lib") //注意,要保证vc路径的lib中,能够找到这个文件
13
14	#define MAX_LOADSTRING 100
15
16	// Global Variables:
17	HINSTANCE hInst; // current instance
18	TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
19	TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
20	GdiplusStartupInput m_gdiplusStartupInput;
21	ULONG_PTR m_pGdiToken;
22	HWND g_hWnd = 0;
23	Image *g_pImageBack=0;
24	//透明度颜色混合选项
25	BLENDFUNCTION g_Blend;
26	//背景图的宽度和高度
27	int g_BakWidth, g_BakHeight;
28
29	// Forward declarations of functions included in this code module:
30	ATOM MyRegisterClass(HINSTANCE hInstance);
31	BOOL InitInstance(HINSTANCE, int);
32	BOOL ImageFromIDResource(UINT nID, LPCTSTR sTR, Image * & pImg);
33	LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
34	INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
35	void Update();
36
37
38	int APIENTRY _tWinMain(HINSTANCE hInstance,
39	HINSTANCE hPrevInstance,
40	LPTSTR lpCmdLine,
41	int nCmdShow)
42	{
43	GdiplusStartup(&m_pGdiToken,&m_gdiplusStartupInput,NULL);
44
45	UNREFERENCED_PARAMETER(hPrevInstance);
46	UNREFERENCED_PARAMETER(lpCmdLine);
47
48	// TODO: Place code here.
49	MSG msg;
50	HACCEL hAccelTable;
51
52	// Initialize global strings
53	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
54	LoadString(hInstance, IDC_RGNWINDOW, szWindowClass, MAX_LOADSTRING);
55	MyRegisterClass(hInstance);
56
57	// Perform application initialization:
58	if (!InitInstance (hInstance, nCmdShow))
59	{
60	return FALSE;
61	}
62
63	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_RGNWINDOW));
64
65	// Main message loop:
66	while (GetMessage(&msg, NULL, 0, 0))
67	{
68	if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
69	{
70	TranslateMessage(&msg);
71	DispatchMessage(&msg);
72	}
73	}
74	GdiplusShutdown(m_pGdiToken);
75	return (int) msg.wParam;
76	}
77
78
79
80	//
81	// FUNCTION: MyRegisterClass()
82	//
83	// PURPOSE: Registers the window class.
84	//
85	// COMMENTS:
86	//
87	// This function and its usage are only necessary if you want this code
88	// to be compatible with Win32 systems prior to the ‘RegisterClassEx‘
89	// function that was added to Windows 95. It is important to call this function
90	// so that the application will get ‘well formed‘ small icons associated
91	// with it.
92	//
93	ATOM MyRegisterClass(HINSTANCE hInstance)
94	{
95	WNDCLASSEX wcex;
96
97	wcex.cbSize = sizeof(WNDCLASSEX);
98
99	wcex.style = CS_HREDRAW | CS_VREDRAW;
100	wcex.lpfnWndProc = WndProc;
101	wcex.cbClsExtra = 0;
102	wcex.cbWndExtra = 0;
103	wcex.hInstance = hInstance;
104	wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDC_RGNWINDOW));
105	wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
106	wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
107	wcex.lpszMenuName = MAKEINTRESOURCE(IDC_RGNWINDOW);
108	wcex.lpszClassName = szWindowClass;
109	wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
110
111	return RegisterClassEx(&wcex);
112	}
113
114	//
115	// FUNCTION: InitInstance(HINSTANCE, int)
116	//
117	// PURPOSE: Saves instance handle and creates main window
118	//
119	// COMMENTS:
120	//
121	// In this function, we save the instance handle in a global variable and
122	// create and display the main program window.
123	//
124	BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
125	{
126	HWND hWnd;
127
128	hInst = hInstance; // Store instance handle in our global variable
129
130	hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
131	CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
132
133	//hWnd=CreateWindowEx(WS_EX_TOPMOST|WS_EX_LAYERED|WS_EX_TOOLWINDOW, szWindowClass,NULL,WS_POPUP|WS_SYSMENU,
134	// 0,0,300,400,NULL,NULL,hInstance,NULL);
135
136	if (!hWnd)
137	{
138	return FALSE;
139	}
140	//初始化
141	g_Blend.SourceConstantAlpha = int(0 * 2.55);//1~255
142	g_Blend.BlendOp=0; //theonlyBlendOpdefinedinWindows2000
143	g_Blend.BlendFlags=0; //nothingelseisspecial...
144	g_Blend.AlphaFormat=1; //...
145	g_Blend.SourceConstantAlpha=255;//AC_SRC_ALPHA
146
147	DWORD dwExStyle = GetWindowLong(hWnd, GWL_EXSTYLE);
148	//设置成工具窗口，无标题栏
149	SetWindowLong(hWnd, GWL_STYLE, dwExStyle ^ WS_EX_TOOLWINDOW);
150	//设置成层次窗口
151	dwExStyle = ::GetWindowLong(hWnd, GWL_EXSTYLE);
152	//if((dwExStyle & WS_EX_LAYERED) != WS_EX_LAYERED)
153	// SetWindowLong(hWnd, GWL_EXSTYLE, dwExStyle|WS_EX_TOPMOST|WS_EX_LAYERED);
154
155	//加载图像
156	//ImageFromIDResource(IDR_CLOCK, L"PNG", g_pImageBack);
157	g_pImageBack = Image::FromFile(_T("D://launcher//bx.png"));
158	ImageType t = g_pImageBack->GetType();
159
160	//bkImg.FromFile();
161	g_BakWidth = g_pImageBack->GetWidth();
162	g_BakHeight = g_pImageBack->GetHeight();
163
164
165	g_hWnd=hWnd;
166
167
168	//::SetWindowPos(g_hWnd, HWND_TOPMOST,0,0,g_BakWidth,g_BakHeight,SWP_NOSIZE|SWP_NOMOVE);
169
170	ShowWindow(hWnd, nCmdShow);
171	UpdateWindow(hWnd);
172	Update();
173
174	return TRUE;
175	}
176
177	//
178	// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
179	//
180	// PURPOSE: Processes messages for the main window.
181	//
182	// WM_COMMAND - process the application menu
183	// WM_PAINT - Paint the main window
184	// WM_DESTROY - post a quit message and return
185	//
186	//
187	LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
188	{
189	int wmId, wmEvent;
190	PAINTSTRUCT ps;
191	HDC hdc;
192
193
194	switch (message)
195	{
196	case WM_COMMAND:
197	wmId = LOWORD(wParam);
198	wmEvent = HIWORD(wParam);
199	// Parse the menu selections:
200	switch (wmId)
201	{
202	case IDM_ABOUT:
203	DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
204	break;
205	case IDM_EXIT:
206	DestroyWindow(hWnd);
207	break;
208
209	default:
210	return DefWindowProc(hWnd, message, wParam, lParam);
211	}
212	break;
213	case WM_PAINT:
214	hdc = BeginPaint(hWnd, &ps);
215	// TODO: Add any drawing code here...
216	Update();
217	EndPaint(hWnd, &ps);
218	break;
219	case WM_DESTROY:
220	PostQuitMessage(0);
221	break;
222	case WM_LBUTTONDOWN:
223	//禁止显示移动矩形窗体框
224	::SystemParametersInfo(SPI_SETDRAGFULLWINDOWS,TRUE,NULL,0);
225	//非标题栏移动整个窗口
226	::SendMessage(hWnd, WM_SYSCOMMAND, SC_MOVE | HTCAPTION, 0);
227	break;
228	default:
229	return DefWindowProc(hWnd, message, wParam, lParam);
230	}
231	return 0;
232	}
233
234	// Message handler for about box.
235	INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
236	{
237	UNREFERENCED_PARAMETER(lParam);
238	switch (message)
239	{
240	case WM_INITDIALOG:
241	return (INT_PTR)TRUE;
242
243	case WM_COMMAND:
244	if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
245	{
246	EndDialog(hDlg, LOWORD(wParam));
247	return (INT_PTR)TRUE;
248	}
249	break;
250	}
251	return (INT_PTR)FALSE;
252	}
253
254
255	BOOL ImageFromIDResource(UINT nID, LPCTSTR sTR, Image * & pImg)
256	{
257	HINSTANCE hInst = hInst;//GetResourceInstance();
258	HRSRC hRsrc = ::FindResource (hInst,MAKEINTRESOURCE(nID),sTR); // type
259	if (!hRsrc)
260	return FALSE;
261	// load resource into memory
262	DWORD len = SizeofResource(hInst, hRsrc);
263	BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
264	if (!lpRsrc)
265	return FALSE;
266	// Allocate global memory on which to create stream
267	HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
268	BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
269	memcpy(pmem,lpRsrc,len);
270	IStream* pstm;
271	CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);
272	// load from stream
273	pImg=Gdiplus::Image::FromStream(pstm);
274	// free/release stuff
275	GlobalUnlock(m_hMem);
276	pstm->Release();
277	FreeResource(lpRsrc);
278	return TRUE;
279	}
280
281
282	void Update()
283	{
284	HDC hdcTemp= ::GetDC(g_hWnd);
285	HDC hdcMemory=CreateCompatibleDC(hdcTemp);
286	HBITMAP hBitMap=CreateCompatibleBitmap(hdcTemp, g_BakWidth, g_BakHeight);
287	SelectObject(hdcMemory, hBitMap);
288
289	HDC hdcScreen=::GetDC (g_hWnd);
290	RECT rct;
291	::GetWindowRect(g_hWnd, &rct);
292	POINT ptWinPos={rct.left,rct.top};
293	Graphics graph(hdcMemory);
294
295	Point points[] = { Point(0, 0),
296	Point(g_BakWidth, 0),
297	Point(0, g_BakHeight)
298	};
299
300	graph.DrawImage(g_pImageBack, points, 3);
301
302	POINT ptDst;
303	ptDst.x = rct.left;
304	ptDst.y = rct.top;
305	SIZE size={g_BakWidth, g_BakHeight};
306
307	POINT pt;
308	pt.x = 0;
309	pt.y = 0;
310
311	//设置成层次窗口
312	DWORD dwExStyle = GetWindowLong(g_hWnd,GWL_EXSTYLE);
313	if((dwExStyle & WS_EX_LAYERED) != WS_EX_LAYERED)
314	{//WS_EX_LAYERED是0x00080000
315	SetWindowLong(g_hWnd, GWL_EXSTYLE,dwExStyle^WS_EX_LAYERED);
316	}
317
318	//更新窗口
319	if (!UpdateLayeredWindow( g_hWnd, hdcScreen, &ptWinPos,
320	&size, hdcMemory, &pt, 0, &g_Blend, 2))
321	{
322	DWORD dwError = ::GetLastError();
323	printf("failed");
324	}
325	//释放资源
326	graph.ReleaseHDC(hdcMemory);
327	::DeleteObject(hBitMap);
328	::DeleteDC(hdcMemory);;
329	::ReleaseDC(g_hWnd, hdcTemp);
330	::ReleaseDC(g_hWnd, hdcScreen);
331	}

以上介绍的就是Windows SDK 实现不规则窗口，希望对你有所帮助。