這裏顯示兩個版本的差異處。
Both sides previous revision 前次修改 | |||
programming:c_sharp [2011/03/16 00:36] wenpei |
programming:c_sharp [2011/04/09 00:02] (目前版本) wenpei 畫面截圖 |
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+ | ====== 在 C# 中抓取指定視窗的畫面截圖 ====== | ||
+ | Ref: http://dan.zzhc.org/post/3617137304/capture-window-with-c-sharp | ||
+ | |||
+ | <code> | ||
+ | /* 引入 Win32 API 中的 User32.DLL | ||
+ | * 需要加上 using System.Runtime.InteropServices; | ||
+ | */ | ||
+ | [DllImport("user32.dll")] | ||
+ | public static extern Boolean GetWindowRect(IntPtr hWnd, ref Rectangle bounds); | ||
+ | |||
+ | public void CaptureWindow () { | ||
+ | /* 取得目標視窗的 Handle | ||
+ | * 需要加上 using System.Diagnostics; | ||
+ | */ | ||
+ | Process[] process = Process.GetProcessesByName("notepad"); | ||
+ | |||
+ | /* 取得該視窗的大小與位置 */ | ||
+ | Rectangle bounds; | ||
+ | GetWindowRect(process[0].MainWindowHandle, ref bounds); | ||
+ | |||
+ | /* 抓取截圖 */ | ||
+ | Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb); | ||
+ | Graphics gfx = Graphics.FromImage(screenshot); | ||
+ | gfx.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy); | ||
+ | |||
+ | /* 利用 PictureBox 顯示出來 */ | ||
+ | imageView.Image = (Image) screenshot; | ||
+ | imageView.Update(); | ||
+ | } | ||
+ | |||
+ | </code> | ||
+ | |||
====== Techotopia: C# Essentials ====== | ====== Techotopia: C# Essentials ====== | ||
http://www.techotopia.com/index.php/C_Sharp_Essentials | http://www.techotopia.com/index.php/C_Sharp_Essentials |