I was told that this piece coding to find the es_password state in c# would work but an error message saying hWnd does not exist in the current context -
internal static class UnsafeNativeMethods
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{
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public const int GWL_STYLE = -16;
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public const int ES_PASSWORD = 0x20;
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[DllImport("user32.dll")]
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public static extern int GetClassName(HandleRef hWnd, System.Text.StringBuilder lpClassName, int nMaxCount);
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[DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
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public static extern IntPtr GetWindowLong32(System.Runtime.InteropServices.HandleRef hWnd, int nIndex);
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}
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-
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private void tmrpass_Tick(object sender, EventArgs e)
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{
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//start timer and espassword code
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// root the handle so it doesn't get disposed until were done with it
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Object root = new Object();
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System.Runtime.InteropServices.HandleRef handleRef = new System.Runtime.InteropServices.HandleRef(root, hWnd);
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System.Text.StringBuilder sb = new System.Text.StringBuilder(1024);
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// get the class name of the window
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UnsafeNativeMethods.GetClassName(new System.Runtime.InteropServices.HandleRef(root, hWnd), sb, sb.Capacity);
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// is it an edit box?
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if (sb.ToString() == "Edit" || sb.ToString().StartsWith("WindowsForms10.EDIT.app"))
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{
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// get the window style of the edit box
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int style = UnsafeNativeMethods.GetWindowLong32(new System.Runtime.InteropServices.HandleRef(root, hWnd), UnsafeNativeMethods.GWL_STYLE).ToInt32();
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// is it a password edit or not?
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if ((style & UnsafeNativeMethods.ES_PASSWORD) == UnsafeNativeMethods.ES_PASSWORD)
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{
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lblkd.Text = "edit is password text box";
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}
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else
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{
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lblkd.Text = "edit is not password text box";
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}
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}
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//stop timer and es password code
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}
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i had fixed up all these other errors but not this one.
if you have any slight of an idea please reply thanks
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