有效地获取Windows桌面的屏幕截图 [英] efficiently acquiring a screenshot of the windows desktop

问题描述

有没有（使用GDI或任何其他库），比低于

在code获取Windows桌面的副本更有效的方法

  HDC dcDesktop;
HDC dcMem;
HBITMAP hbmpMem;
HBITMAP hOriginal;
位图bmpDesktopCopy;dcDesktop =的GetDC（GetDesktopWindow（））;
dcMem = CreateCompatibleDC（dcDesktop）;
hbmpMem = CreateCompatibleBitmap（dcMem，m_lWidth，m_lHeight）;的BitBlt（dcMem，0，0，m_lWidth，m_lHeight，dcDesktop，0，0，SRCCOPY）;//将hbmpMem复制到桌面副本
GetObject的（hbmpMem，sizeof的（位图），（LPSTR）及bmpDesktopCopy）;
 

解决方案

HTTP ：//www.$c$cproject.com/KB/dialog/screencap.aspx

本页面有几个不同的方式来采取截图。他们使用DirectX方法似乎很简单。

这是什么那篇文章中，我不认为有任何更多的捕捉桌面的有效方法。在提到除了

Is there a more efficient way of getting a copy of the windows desktop ( using GDI or any other library ) than the code below

HDC      dcDesktop;
HDC         dcMem;
HBITMAP     hbmpMem;
HBITMAP     hOriginal;
BITMAP      bmpDesktopCopy;

dcDesktop   = GetDC( GetDesktopWindow() ); 
dcMem       = CreateCompatibleDC( dcDesktop );
hbmpMem     = CreateCompatibleBitmap( dcMem, m_lWidth, m_lHeight );

BitBlt( dcMem, 0, 0, m_lWidth, m_lHeight, dcDesktop, 0, 0, SRCCOPY );

// Copy the hbmpMem to the desktop copy
GetObject(hbmpMem, sizeof(BITMAP), (LPSTR)&bmpDesktopCopy);

解决方案

http://www.codeproject.com/KB/dialog/screencap.aspx

This page has a couple different ways to take screenshots. The DirectX method they use seems simple enough.

Aside from what's mentioned in that article, I don't think there's any more an efficient method of capturing the desktop.

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