English 中文(简体)
Desktop screenshot in WPF
原标题:

How can I take a screenshot of the desktop in WPF? Preferably with the mouse cursor showing.

最佳回答

Without trying to steal the answer, use the code give in the CodeProject article referenced by Johannes to create the GDI bitmap. You can then use the following code to convert it into a BitmapSource for use in WPF:

    public static BitmapSource ToBitmapSource(this System.Drawing.Bitmap source)
    {
        var hBitmap = source.GetHbitmap();

        try
        {
            return System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
                hBitmap,
                IntPtr.Zero,
                Int32Rect.Empty,
                BitmapSizeOptions.FromEmptyOptions());
        }
        catch (Win32Exception)
        {
            return null;
        }
        finally
        {
            NativeMethods.DeleteObject(hBitmap);
        }
    }

where the code for NativeMethods.DeleteObject() is:

    [DllImport("gdi32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    internal static extern bool DeleteObject(IntPtr hObject);
问题回答

暂无回答




相关问题
Anyone feel like passing it forward?

I m the only developer in my company, and am getting along well as an autodidact, but I know I m missing out on the education one gets from working with and having code reviewed by more senior devs. ...

NSArray s, Primitive types and Boxing Oh My!

I m pretty new to the Objective-C world and I have a long history with .net/C# so naturally I m inclined to use my C# wits. Now here s the question: I feel really inclined to create some type of ...

C# Marshal / Pinvoke CBitmap?

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

How to Use Ghostscript DLL to convert PDF to PDF/A

How to user GhostScript DLL to convert PDF to PDF/A. I know I kind of have to call the exported function of gsdll32.dll whose name is gsapi_init_with_args, but how do i pass the right arguments? BTW, ...

Linqy no matchy

Maybe it s something I m doing wrong. I m just learning Linq because I m bored. And so far so good. I made a little program and it basically just outputs all matches (foreach) into a label control. ...

热门标签