/// <summary>
/// Provides enumeration of screenshots of a specific application window.
/// </summary>
/// <param name="applicationName">The title of the main application window.</param>
/// <param name="isDisplayCursor">Whether to display the cursor in screenshots.</param>
/// <returns>Enumeration of screenshots of a specific application window.</returns>
public static IEnumerable <Image> TakeSeriesOfScreenshotsAppWindow(string applicationName,
bool isDisplayCursor)
{
var windowHandle = ApplicationWindow.FindWindow(null, applicationName);
var screeRectangle = new Rectangle();
while (true)
{
ApplicationWindow.GetWindowRect(windowHandle, ref screeRectangle);
screeRectangle.Width -= screeRectangle.X;
screeRectangle.Height -= screeRectangle.Y;
var image = new Bitmap(screeRectangle.Width, screeRectangle.Height);
var graphics = Graphics.FromImage(image);
var hdc = graphics.GetHdc();
if (!ApplicationWindow.PrintWindow(windowHandle, hdc,
ApplicationWindow.DrawAllWindow))
{
int error = Marshal.GetLastWin32Error();
throw new System.ComponentModel.Win32Exception($"An error occurred while creating a screenshot"
+ $" of the application window. Error Number: {error}.");
}
graphics.ReleaseHdc(hdc);
if (isDisplayCursor)
{
AddCursorToScreenshot(graphics, screeRectangle);
}
yield return(image);
image.Dispose();
graphics.Dispose();
}
}