基于duilib实现的激光笔小工具

Posted 2021-03-15 a1aa

需求描述：模拟真实的激光笔，用于在ppt播放时可通过移动端进行控制;

实现思路：c++ + win32 api + UI（duilib）+鼠标事件+定时器策略，激光笔跟随鼠标的移动而移动，鼠标双击退出;

具体效果：

 

 

  1 #pragma once
  2 #include "stdafx.h"
  3 class wnd_laserpen : public CWindowWnd, public INotifyUI
  4 {
  5 public:
  6     wnd_laserpen() {
  7         Create(NULL, _T("wnd_laserpen"), WS_VISIBLE, WS_EX_TOOLWINDOW | WS_EX_TOPMOST);
  8     };
  9 public:
 10     //显示隐藏下载管理器事件处理
 11     bool OnRootEvent(void* param)
 12     {
 13         TEventUI* pEvent = (TEventUI*)param;
 14         //鼠标双击
 15         if (pEvent->Type == UIEVENT_DBLCLICK)
 16         {
 17             KillTimer(m_hWnd, 8888);
 18             exit(0);
 19         }
 20         return true;
 21     }
 22     void Init()
 23     {
 24         ShowCursor(FALSE);
 25         SetTimer(m_hWnd, 8888, 50, NULL);
 26         m_root= static_cast<CVerticalLayoutUI*>(m_pm.FindControl(_T("root")));
 27         if (m_root)
 28         {
 29             m_root->OnEvent += DuiLib::MakeDelegate(this, &wnd_laserpen::OnRootEvent);
 30         }
 31     }
 32 public:
 33     LPCTSTR GetWindowClassName() const { return _T("wnd_laserpen"); };
 34     UINT GetClassStyle() const { return CS_DBLCLKS; };
 35     void OnFinalMessage(HWND /*hWnd*/) { delete this; };
 36     void Notify(TNotifyUI& msg)
 37     {
 38         
 39     }
 40 
 41     void OnLClick(CControlUI *pControl)
 42     {
 43 
 44     }
 45 
 46 
 47     LRESULT OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 48     {
 49         // ICONS 图标加载
 50         SetIcon(IDI_SMALL);
 51 
 52         LONG styleValue = ::GetWindowLong(*this, GWL_STYLE);
 53         styleValue &= ~WS_CAPTION;
 54         ::SetWindowLong(*this, GWL_STYLE, styleValue | WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
 55 
 56         m_pm.Init(m_hWnd);
 57         CDialogBuilder builder;
 58         CControlUI* pRoot = builder.Create(_T("wnd_laserpen.xml"), (UINT)0, NULL, &m_pm);
 59         ASSERT(pRoot && "Failed to parse XML");
 60         m_pm.AttachDialog(pRoot);
 61         m_pm.AddNotifier(this);
 62         return 0;
 63     }
 64 
 65     LRESULT OnClose(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 66     {
 67         bHandled = FALSE;
 68         return 0;
 69     }
 70 
 71     LRESULT OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 72     {
 73         bHandled = FALSE;
 74         return 0;
 75     }
 76 
 77     LRESULT OnNcActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 78     {
 79         if (::IsIconic(*this)) bHandled = FALSE;
 80         return (wParam == 0) ? TRUE : FALSE;
 81     }
 82 
 83     LRESULT OnNcCalcSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 84     {
 85         return 0;
 86     }
 87 
 88     LRESULT OnNcPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 89     {
 90         return 0;
 91     }
 92     //用于控制自我关闭
 93     LRESULT OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
 94     {
 95         POINT p;
 96         GetCursorPos(&p);//获取鼠标坐标
 97         ::SetWindowPos(m_hWnd, HWND_TOPMOST, p.x-11, p.y-11, 0, 0, SWP_NOSIZE);
 98         bHandled = TRUE;
 99         return 0;
100     }
101     LRESULT HandleMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
102     {
103         LRESULT lRes = 0;
104         BOOL bHandled = TRUE;
105 
106         switch (uMsg) {
107         case WM_CREATE:        lRes = OnCreate(uMsg, wParam, lParam, bHandled); break;
108         case WM_CLOSE:         lRes = OnClose(uMsg, wParam, lParam, bHandled); break;
109         case WM_DESTROY:       lRes = OnDestroy(uMsg, wParam, lParam, bHandled); break;
110         case WM_NCACTIVATE:    lRes = OnNcActivate(uMsg, wParam, lParam, bHandled); break;
111         case WM_NCCALCSIZE:    lRes = OnNcCalcSize(uMsg, wParam, lParam, bHandled); break;
112         case WM_NCPAINT:       lRes = OnNcPaint(uMsg, wParam, lParam, bHandled); break;
113         case WM_KILLFOCUS:       lRes = OnKillFocus(uMsg, wParam, lParam, bHandled); break;
114         case WM_TIMER:
115             if (wParam == 8888)
116             {
117                 //KillTimer(m_hWnd, 8888);
118                 OnTimer(uMsg, wParam, lParam, bHandled);
119                 //SetTimer(m_hWnd, 8888, 50, NULL);
120             }
121             bHandled = TRUE;
122         default:
123             bHandled = FALSE;
124         }
125 
126         if (uMsg == WM_LASERPEN_CLOSE)
127         {
128             KillTimer(m_hWnd, 8888);
129             exit(0);
130             bHandled = FALSE;
131             return 0;
132         }
133         if (bHandled) return lRes;
134         if (m_pm.MessageHandler(uMsg, wParam, lParam, lRes)) return lRes;
135         return CWindowWnd::HandleMessage(uMsg, wParam, lParam);
136     }
137     LRESULT OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
138     {
139         //Close(0);
140         return 0;
141     }
142     public:
143         CPaintManagerUI m_pm;
144         CVerticalLayoutUI* m_root;
145 };

xml文件：

1 <?xml version="1.0" encoding="UTF-8"?>
2 <Window size="22,22" bktrans="true">
3   <VerticalLayout name="root" width="22" height="22" bkimage="laserpen1.png">
4   
5   </VerticalLayout>
6 </Window>