Get a Clipboard picture.

[Jolied]

In an attempt to retrieve the Clipboard, it's empty. What's the problem? Or can we copy a picture of richTextBox by blowing Clipboard?

Clipboard.Clear();
if ((this.richTextBox5.SelectionType & RichTextBoxSelectionTypes.Object) == RichTextBoxSelectionTypes.Object)
{
    richTextBox5.Copy();
    if (Clipboard.ContainsImage())
    {
        pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox1.Image = Clipboard.GetImage();
    }
    else
    {
        MessageBox.Show("Пусто");
    }

[gionna]

Method Clipboard.ContainsImage() Check that there is a BMP image exchange in the buffer. When copying RichText, there's likely to be an EMF image. It can be verified by a challenge Clipboard.ContainsData(DataFormats.EnhancedMetafile)♪

The image must now be removed from the exchange buffer. However, for class Clipboard EMF extraction for some reason is not working: https://stackoverflow.com/questions/19868816/

Therefore, it will be necessary to write an additional code to address the Native WinAPI to extract the image from the buffer:

private const int CF_ENHMETAFILE = 14;
[DllImport("user32.dll")]

private static extern bool OpenClipboard(IntPtr hWndNewOwner);
[DllImport("user32.dll")]

private static extern int IsClipboardFormatAvailable(int wFormat);
[DllImport("user32.dll")]

private static extern IntPtr GetClipboardData(int wFormat);
[DllImport("user32.dll")]

private static extern int CloseClipboard();
private Image GetImage()

{

Metafile result = null;

if (OpenClipboard(this.Handle)) {

try {

if (IsClipboardFormatAvailable(CF_ENHMETAFILE) != 0) {

var hMeta = GetClipboardData(CF_ENHMETAFILE);

if (hMeta != IntPtr.Zero)

result = new Metafile(hMeta, true);

}

} finally {

CloseClipboard();

}

}
return result;

}

The exchange booth can now be operated:

Clipboard.Clear();

if ((richTextBox5.SelectionType & RichTextBoxSelectionTypes.Object) != 0) {

richTextBox5.Copy();

if (Clipboard.ContainsData(DataFormats.EnhancedMetafile)) {

var image = GetImage();

if (image != null)

pictureBox1.Image = image;

}

}