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test
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そのPictureBoxのParentプロパティにそのPanelを設定すればいいです
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---
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[Control.cs](https://referencesource.microsoft.com/#System.Windows.Forms)
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```C#
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public Control Parent {
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get {
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Debug.WriteLineIf(IntSecurity.SecurityDemand.TraceVerbose, "GetParent Demanded");
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IntSecurity.GetParent.Demand();
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return ParentInternal;
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}
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set {
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ParentInternal = value;
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}
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}
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// SECURITY WARNING: This property bypasses a security demand. Use with caution!
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internal virtual Control ParentInternal {
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get {
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return parent;
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}
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set {
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if (parent != value) {
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if (value != null) {
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value.Controls.Add(this);
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}
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else {
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parent.Controls.Remove(this);
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}
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}
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}
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}
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```
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