回答:
ScreenCapture sc = new ScreenCapture();
// capture entire screen, and save it to a file
Image img = sc.CaptureScreen();
// display image in a Picture control named imageDisplay
this.imageDisplay.Image = img;
// capture this window, and save it
sc.CaptureWindowToFile(this.Handle,"C:\\temp2.gif",ImageFormat.Gif);
http://www.developerfusion.com/code/4630/capture-a-screen-shot/
Rectangle bounds = Screen.GetBounds(Point.Empty);
using(Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height))
{
using(Graphics g = Graphics.FromImage(bitmap))
{
g.CopyFromScreen(Point.Empty, Point.Empty, bounds.Size);
}
bitmap.Save("test.jpg", ImageFormat.Jpeg);
}
現在のウィンドウ使用をキャプチャするため
Rectangle bounds = this.Bounds;
using (Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height))
{
using (Graphics g = Graphics.FromImage(bitmap))
{
g.CopyFromScreen(new Point(bounds.Left,bounds.Top), Point.Empty, bounds.Size);
}
bitmap.Save("C://test.jpg", ImageFormat.Jpeg);
}
現在アクティブなウィンドウ(C#アプリケーションだけでなく)または画面全体をキャプチャするための次の解決策を提案します。ウィンドウまたは画面の左上隅を基準にしてカーソル位置をそれぞれ決定します。
public enum enmScreenCaptureMode
{
Screen,
Window
}
class ScreenCapturer
{
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
private static extern IntPtr GetWindowRect(IntPtr hWnd, ref Rect rect);
[StructLayout(LayoutKind.Sequential)]
private struct Rect
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
public Bitmap Capture(enmScreenCaptureMode screenCaptureMode = enmScreenCaptureMode.Window)
{
Rectangle bounds;
if (screenCaptureMode == enmScreenCaptureMode.Screen)
{
bounds = Screen.GetBounds(Point.Empty);
CursorPosition = Cursor.Position;
}
else
{
var foregroundWindowsHandle = GetForegroundWindow();
var rect = new Rect();
GetWindowRect(foregroundWindowsHandle, ref rect);
bounds = new Rectangle(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top);
CursorPosition = new Point(Cursor.Position.X - rect.Left, Cursor.Position.Y - rect.Top);
}
var result = new Bitmap(bounds.Width, bounds.Height);
using (var g = Graphics.FromImage(result))
{
g.CopyFromScreen(new Point(bounds.Left, bounds.Top), Point.Empty, bounds.Size);
}
return result;
}
public Point CursorPosition
{
get;
protected set;
}
}
Rect
をSystem に置き換えようとしましたRectangle
が、その後、関数GetWindowRect
が間違った長方形を返しました。Right
およびの代わりに、出力長方形をTop
設定Width
しHeight
ます。
var thisWindowHandle = new WindowInteropHelper(Application.Current.MainWindow).Handle;
代わりに使用する単一ウィンドウのWPFアプリ
デスクトップまたはアクティブなウィンドウをキャプチャするスニペットを次に示します。Windowsフォームへの参照はありません。
public class ScreenCapture
{
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
public static extern IntPtr GetDesktopWindow();
[StructLayout(LayoutKind.Sequential)]
private struct Rect
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[DllImport("user32.dll")]
private static extern IntPtr GetWindowRect(IntPtr hWnd, ref Rect rect);
public static Image CaptureDesktop()
{
return CaptureWindow(GetDesktopWindow());
}
public static Bitmap CaptureActiveWindow()
{
return CaptureWindow(GetForegroundWindow());
}
public static Bitmap CaptureWindow(IntPtr handle)
{
var rect = new Rect();
GetWindowRect(handle, ref rect);
var bounds = new Rectangle(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top);
var result = new Bitmap(bounds.Width, bounds.Height);
using (var graphics = Graphics.FromImage(result))
{
graphics.CopyFromScreen(new Point(bounds.Left, bounds.Top), Point.Empty, bounds.Size);
}
return result;
}
}
画面全体をキャプチャする方法:
var image = ScreenCapture.CaptureDesktop();
image.Save(@"C:\temp\snippetsource.jpg", ImageFormat.Jpeg);
アクティブウィンドウをキャプチャする方法:
var image = ScreenCapture.CaptureActiveWindow();
image.Save(@"C:\temp\snippetsource.jpg", ImageFormat.Jpeg);
もともとはここにあります:http : //www.snippetsource.net/Snippet/158/capture-screenshot-in-c
KvanTTTのコードはうまくいきました。少し拡張して、保存形式の柔軟性を高め、hWnd、.NET Control / Formで保存できるようにしました。いくつかのオプションを使用して、ビットマップを取得したり、ファイルに保存したりできます。
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace MosaiqPerformanceMonitor {
public enum CaptureMode {
Screen, Window
}
public static class ScreenCapturer {
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
private static extern IntPtr GetWindowRect(IntPtr hWnd, ref Rect rect);
[StructLayout(LayoutKind.Sequential)]
private struct Rect {
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
public static extern IntPtr GetDesktopWindow();
/// <summary> Capture Active Window, Desktop, Window or Control by hWnd or .NET Contro/Form and save it to a specified file. </summary>
/// <param name="filename">Filename.
/// <para>* If extension is omitted, it's calculated from the type of file</para>
/// <para>* If path is omitted, defaults to %TEMP%</para>
/// <para>* Use %NOW% to put a timestamp in the filename</para></param>
/// <param name="mode">Optional. The default value is CaptureMode.Window.</param>
/// <param name="format">Optional file save mode. Default is PNG</param>
public static void CaptureAndSave(string filename, CaptureMode mode = CaptureMode.Window, ImageFormat format = null) {
ImageSave(filename, format, Capture(mode));
}
/// <summary> Capture a specific window (or control) and save it to a specified file. </summary>
/// <param name="filename">Filename.
/// <para>* If extension is omitted, it's calculated from the type of file</para>
/// <para>* If path is omitted, defaults to %TEMP%</para>
/// <para>* Use %NOW% to put a timestamp in the filename</para></param>
/// <param name="handle">hWnd (handle) of the window to capture</param>
/// <param name="format">Optional file save mode. Default is PNG</param>
public static void CaptureAndSave(string filename, IntPtr handle, ImageFormat format = null) {
ImageSave(filename, format, Capture(handle));
}
/// <summary> Capture a specific window (or control) and save it to a specified file. </summary>
/// <param name="filename">Filename.
/// <para>* If extension is omitted, it's calculated from the type of file</para>
/// <para>* If path is omitted, defaults to %TEMP%</para>
/// <para>* Use %NOW% to put a timestamp in the filename</para></param>
/// <param name="c">Object to capture</param>
/// <param name="format">Optional file save mode. Default is PNG</param>
public static void CaptureAndSave(string filename, Control c, ImageFormat format = null) {
ImageSave(filename, format, Capture(c));
}
/// <summary> Capture the active window (default) or the desktop and return it as a bitmap </summary>
/// <param name="mode">Optional. The default value is CaptureMode.Window.</param>
public static Bitmap Capture(CaptureMode mode = CaptureMode.Window) {
return Capture(mode == CaptureMode.Screen ? GetDesktopWindow() : GetForegroundWindow());
}
/// <summary> Capture a .NET Control, Form, UserControl, etc. </summary>
/// <param name="c">Object to capture</param>
/// <returns> Bitmap of control's area </returns>
public static Bitmap Capture(Control c) {
return Capture(c.Handle);
}
/// <summary> Capture a specific window and return it as a bitmap </summary>
/// <param name="handle">hWnd (handle) of the window to capture</param>
public static Bitmap Capture(IntPtr handle) {
Rectangle bounds;
var rect = new Rect();
GetWindowRect(handle, ref rect);
bounds = new Rectangle(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top);
CursorPosition = new Point(Cursor.Position.X - rect.Left, Cursor.Position.Y - rect.Top);
var result = new Bitmap(bounds.Width, bounds.Height);
using (var g = Graphics.FromImage(result))
g.CopyFromScreen(new Point(bounds.Left, bounds.Top), Point.Empty, bounds.Size);
return result;
}
/// <summary> Position of the cursor relative to the start of the capture </summary>
public static Point CursorPosition;
/// <summary> Save an image to a specific file </summary>
/// <param name="filename">Filename.
/// <para>* If extension is omitted, it's calculated from the type of file</para>
/// <para>* If path is omitted, defaults to %TEMP%</para>
/// <para>* Use %NOW% to put a timestamp in the filename</para></param>
/// <param name="format">Optional file save mode. Default is PNG</param>
/// <param name="image">Image to save. Usually a BitMap, but can be any
/// Image.</param>
static void ImageSave(string filename, ImageFormat format, Image image) {
format = format ?? ImageFormat.Png;
if (!filename.Contains("."))
filename = filename.Trim() + "." + format.ToString().ToLower();
if (!filename.Contains(@"\"))
filename = Path.Combine(Environment.GetEnvironmentVariable("TEMP") ?? @"C:\Temp", filename);
filename = filename.Replace("%NOW%", DateTime.Now.ToString("yyyy-MM-dd@hh.mm.ss"));
image.Save(filename, format);
}
}
}
私はあなたGraphics.CopyFromScreen
がスクリーンショットを取得するために使用することを想定しています。
P / Invokeを使用してGetForegroundWindowを(そして、その位置とサイズを取得)して、コピー元の領域を判別できます。
この質問のコードを使用できます:Windowsでスクリーンショットをファイルに直接保存するにはどうすればよいですか?
WIN32_API.GetDesktopWindow()
キャプチャするウィンドウのHandleプロパティに変更するだけです。
static void ImageSave()メソッドを少し調整すると、保存する場所を選択できます。クレジットはマイクロソフトに送られます(http://msdn.microsoft.com/en-us/library/sfezx97z.aspx)
static void ImageSave(string filename, ImageFormat format, Image image, SaveFileDialog saveFileDialog1)
{
saveFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif";
saveFileDialog1.Title = "Enregistrer un image";
saveFileDialog1.ShowDialog();
// If the file name is not an empty string open it for saving.
if (saveFileDialog1.FileName != "")
{
// Saves the Image via a FileStream created by the OpenFile method.
System.IO.FileStream fs =
(System.IO.FileStream)saveFileDialog1.OpenFile();
// Saves the Image in the appropriate ImageFormat based upon the
// File type selected in the dialog box.
// NOTE that the FilterIndex property is one-based.
switch (saveFileDialog1.FilterIndex)
{
case 1:
image.Save(fs,
System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case 2:
image.Save(fs,
System.Drawing.Imaging.ImageFormat.Bmp);
break;
case 3:
image.Save(fs,
System.Drawing.Imaging.ImageFormat.Gif);
break;
}
fs.Close();
}
}
button_clickイベントは次のようにコーディングする必要があります...
private void btnScreenShot_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
ScreenCapturer.CaptureAndSave(filename, mode, format, saveFileDialog1);
}//
マネージコードを使用する場合:これにより、ProcessIdを介してすべてのウィンドウがキャプチャされます。
以下を使用してウィンドウをアクティブにしました。
Microsoft.VisualBasic.Interaction.AppActivate(ProcessId);
Threading.Thread.Sleep(20);
印刷画面を使用してウィンドウをキャプチャしました。
SendKeys.SendWait("%{PRTSC}");
Threading.Thread.Sleep(40);
IDataObject objData = Clipboard.GetDataObject();
次のコードを使用します。
// Shot size = screen size
Size shotSize = Screen.PrimaryScreen.Bounds.Size;
// the upper left point in the screen to start shot
// 0,0 to get the shot from upper left point
Point upperScreenPoint = new Point(0, 0);
// the upper left point in the image to put the shot
Point upperDestinationPoint = new Point(0, 0);
// create image to get the shot in it
Bitmap shot = new Bitmap(shotSize.Width, shotSize.Height);
// new Graphics instance
Graphics graphics = Graphics.FromImage(shot);
// get the shot by Graphics class
graphics.CopyFromScreen(upperScreenPoint, upperDestinationPoint, shotSize);
// return the image
pictureBox1.Image = shot;
ArsenMkrtの返信に基づいていますが、これによりフォーム内のコントロールをキャプチャできます(たとえば、WebBrowserコントロールを含み、その表示だけをキャプチャしたいツールを書いています)。PointToScreenメソッドの使用に注意してください。
//Project: WebCapture
//Filename: ScreenshotUtils.cs
//Author: George Birbilis (http://zoomicon.com)
//Version: 20130820
using System.Drawing;
using System.Windows.Forms;
namespace WebCapture
{
public static class ScreenshotUtils
{
public static Rectangle Offseted(this Rectangle r, Point p)
{
r.Offset(p);
return r;
}
public static Bitmap GetScreenshot(this Control c)
{
return GetScreenshot(new Rectangle(c.PointToScreen(Point.Empty), c.Size));
}
public static Bitmap GetScreenshot(Rectangle bounds)
{
Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height);
using (Graphics g = Graphics.FromImage(bitmap))
g.CopyFromScreen(new Point(bounds.Left, bounds.Top), Point.Empty, bounds.Size);
return bitmap;
}
public const string DEFAULT_IMAGESAVEFILEDIALOG_TITLE = "Save image";
public const string DEFAULT_IMAGESAVEFILEDIALOG_FILTER = "PNG Image (*.png)|*.png|JPEG Image (*.jpg)|*.jpg|Bitmap Image (*.bmp)|*.bmp|GIF Image (*.gif)|*.gif";
public const string CUSTOMPLACES_COMPUTER = "0AC0837C-BBF8-452A-850D-79D08E667CA7";
public const string CUSTOMPLACES_DESKTOP = "B4BFCC3A-DB2C-424C-B029-7FE99A87C641";
public const string CUSTOMPLACES_DOCUMENTS = "FDD39AD0-238F-46AF-ADB4-6C85480369C7";
public const string CUSTOMPLACES_PICTURES = "33E28130-4E1E-4676-835A-98395C3BC3BB";
public const string CUSTOMPLACES_PUBLICPICTURES = "B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5";
public const string CUSTOMPLACES_RECENT = "AE50C081-EBD2-438A-8655-8A092E34987A";
public static SaveFileDialog GetImageSaveFileDialog(
string title = DEFAULT_IMAGESAVEFILEDIALOG_TITLE,
string filter = DEFAULT_IMAGESAVEFILEDIALOG_FILTER)
{
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = title;
dialog.Filter = filter;
/* //this seems to throw error on Windows Server 2008 R2, must be for Windows Vista only
dialog.CustomPlaces.Add(CUSTOMPLACES_COMPUTER);
dialog.CustomPlaces.Add(CUSTOMPLACES_DESKTOP);
dialog.CustomPlaces.Add(CUSTOMPLACES_DOCUMENTS);
dialog.CustomPlaces.Add(CUSTOMPLACES_PICTURES);
dialog.CustomPlaces.Add(CUSTOMPLACES_PUBLICPICTURES);
dialog.CustomPlaces.Add(CUSTOMPLACES_RECENT);
*/
return dialog;
}
public static void ShowSaveFileDialog(this Image image, IWin32Window owner = null)
{
using (SaveFileDialog dlg = GetImageSaveFileDialog())
if (dlg.ShowDialog(owner) == DialogResult.OK)
image.Save(dlg.FileName);
}
}
}
Bitmapオブジェクトがあれば、その上でSaveを呼び出すだけです。
private void btnCapture_Click(object sender, EventArgs e)
{
webBrowser.GetScreenshot().Save("C://test.jpg", ImageFormat.Jpeg);
}
上記は、GCがビットマップをグラブすることを前提としていますが、someControl.getScreenshot()の結果をビットマップ変数に割り当て、各イメージの終了時にその変数を手動で破棄することをお勧めします。ロードしたいウェブページのリストがあり、それらのスクリーンショットを保存するとします):
private void btnCapture_Click(object sender, EventArgs e)
{
Bitmap bitmap = webBrowser.GetScreenshot();
bitmap.ShowSaveFileDialog();
bitmap.Dispose(); //release bitmap resources
}
さらに、using(子)ブロック内で例外が発生した場合でもビットマップリソースを解放するという追加の利点があるusing句を使用できます。
private void btnCapture_Click(object sender, EventArgs e)
{
using(Bitmap bitmap = webBrowser.GetScreenshot())
bitmap.ShowSaveFileDialog();
//exit from using block will release bitmap resources even if exception occured
}
更新:
これで、WebCaptureツールがWebからClickOnceでデプロイされ(http://gallery.clipflair.net/WebCapture)(ClickOnceのおかげで自動更新もサポートされます)、そのソースコードはhttps://github.com/Zoomiconにあります。 / ClipFlair / tree / master / Server / Tools / WebCapture