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Try adding this code to the Form_Load event.<br />
<br />
this.SetStyle(ControlStyle<wbr />s.DoubleBu<wbr />ffer | <br />
&nbsp; &nbsp; &nbsp; ControlStyles.UserPaint | <br />
&nbsp; &nbsp; &nbsp; ControlStyles.AllPaintingI<wbr />nWmPaint,<br />
&nbsp; &nbsp; &nbsp; true);<br />

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Try adding this code to the Form_Load event.

this.SetStyle(ControlStyles.DoubleBuffer |
      ControlStyles.UserPaint |
      ControlStyles.AllPaintingInWmPaint,
      true);


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The answer I provided is the correct one.
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The answer I provided is the correct one.

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<div class="content wysiwyg-content">
I have an MDI with a jpg as its background image. &nbsp;As I move the child windows around within the MDI, the background image blinks and flickers, and my desktop also joins in. &nbsp;I have the form set to doublebuffered, but it still flashes.
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I have an MDI with a jpg as its background image.  As I move the child windows around within the MDI, the background image blinks and flickers, and my desktop also joins in.  I have the form set to doublebuffered, but it still flashes.

C# MDI with BackgroundImage Flickers when child moves

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