增强printscreen按键-显示光标

来源：互联网发布：淘宝开店类目怎么选编辑：程序博客网时间：2024/06/05 17:05

如果仅仅是想屏蔽printscreen按键

那么直接在你的程序重新registered即可

RegisterHotKey(m_hWnd, IDHOT_SNAPDESKTOP, 0, VK_SNAPSHOT);

RegisterHotKey(m_hWnd, IDHOT_SNAPWINDOW, MOD_ALT, VK_SNAPSHOT);

更详细说明：http://www.vckbase.com/document/viewdoc/?id=1566

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键盘printscreen按键默认情况

printscreen 截屏（不截光标）

printscreen+alt 截当前窗口（不截光标）

本文增强printscreen按键功能，使之

printscreen 截屏（显示光标）

printscreen+alt 截当前窗口（显示光标）

主要处理过程：

registered printscreen按键的hotkey，见本文头，

在WNDPROC中处理WM_HOTKEY，判断printscreen按键事件，截图并画光标，保存截图内容到剪切板。

关键代码：

截图

void TmainForm::SaveScreenBmpToClipboard(){    HDC hdc=GetDC(NULL);    if(hdc)    {             HDC memDC=CreateCompatibleDC(hdc);          assert(memDC);          HBITMAP hBmp=CreateCompatibleBitmap(hdc,Screen->Width,Screen->Height);          assert(hBmp);          SelectObject(memDC,hBmp);          ::BitBlt(memDC,0,0,Screen->Width,Screen->Height,hdc,0,0,SRCCOPY);          DrawCursor(memDC);          if(OpenClipboard(Handle))          {              assert(EmptyClipboard());              assert(SetClipboardData(CF_BITMAP,hBmp));              assert(CloseClipboard());          }          else          {              MessageBoxA(NULL,"无法打开剪切板！","提示",MB_ICONERROR);          }          DeleteObject(hBmp);          DeleteObject(memDC);          ReleaseDC(NULL,hdc);    }  }

画出光标

void TmainForm::DrawCursor(HDC hdc,bool bScreen){    HCURSOR   hCursor=GetCursor();     POINT   ptCursor;     GetCursorPos(&ptCursor);     if(!bScreen)    {        ::ScreenToClient(GetForegroundWindow(),&ptCursor);    }    //获取光标的图标数据     ICONINFO   IconInfo;     if   (GetIconInfo(hCursor,   &IconInfo))     {     ptCursor.x   -=   ((int)   IconInfo.xHotspot);     ptCursor.y   -=   ((int)   IconInfo.yHotspot);     if   (IconInfo.hbmMask   !=   NULL)     DeleteObject(IconInfo.hbmMask);     if   (IconInfo.hbmColor   !=   NULL)     DeleteObject(IconInfo.hbmColor);     }     //在兼容设备描述表上画出该光标     DrawIconEx(     hdc, //   handle   to   device   context       ptCursor.x,   ptCursor.y,     nCursorType==0?hCursor:LoadCursor(NULL,MAKEINTRESOURCE(nCursorType)), //   handle   to   icon   to   draw       0,0, //   width   of   the   icon       0, //   index   of   frame   in   animated   cursor       NULL,    DI_NORMAL   |   DI_COMPAT    //         icon-drawing   flags       ); }

下载地址：http://download.csdn.net/detail/qq752923276/4270836