SetClassLong (user32)
Last changed: -202.74.138.1

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Summary

C# Signature:

[Obsolete("This method will crash on 64-bit operating systems. Use SetClassLongPtr instead"),
DllImport("user32.dll")]
static extern uint SetClassLong(HandleRef hWnd, int nIndex, uint dwNewLong);

User-Defined Types:

None.

Notes:

This declaration will crash on 64-bit operating systems.

"SetClassLong" is obsolete and "SetClassLongPtr" should be used instead.

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Sample Code:

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Alternative Managed API:

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Documentation