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<TITLE> [Mono-bugs] [Bug 554635] New: System.Drawing.Point.Point(int) transposes X &amp; Y
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<H1>[Mono-bugs] [Bug 554635] New: System.Drawing.Point.Point(int) transposes X &amp; Y</H1>
<B>bugzilla_noreply at novell.com</B>
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TITLE="[Mono-bugs] [Bug 554635] New: System.Drawing.Point.Point(int) transposes X &amp; Y">bugzilla_noreply at novell.com
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<I>Wed Nov 11 13:25:11 EST 2009</I>
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<PRE><A HREF="http://bugzilla.novell.com/show_bug.cgi?id=554635">http://bugzilla.novell.com/show_bug.cgi?id=554635</A>
Summary: System.Drawing.Point.Point(int) transposes X &amp; Y
Classification: Mono
Product: Mono: Class Libraries
Version: 2.6.x
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Sys.Drawing.
AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">landrus2 at by-rite.net</A>
QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
Found By: ---
Created an attachment (id=326919)
--&gt; (<A HREF="http://bugzilla.novell.com/attachment.cgi?id=326919">http://bugzilla.novell.com/attachment.cgi?id=326919</A>)
A Form that should display Red where it is clicked
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-us)
AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
The constructor (.ctor) of Point that takes a single int parameter does not
work as described in the documentation
(<A HREF="http://msdn.microsoft.com/en-us/library/bf1b4f2b.aspx">http://msdn.microsoft.com/en-us/library/bf1b4f2b.aspx</A>). It transposes the X &amp;
Y coordinates. Its behavior is consistent with the &lt;remarks /&gt; before its
source code. However, the documented description of the parameter is probably
more useful because it is consistent with the LParam of a mouse Message.
Reproducible: Always
Steps to Reproduce:
1. Handle a WM_LBUTTONDOWN Message (or any mouse Message).
2. Construct a Point from the LParam property of the Message. { Point p = new
Point ((int) m.LParam); }
3. Draw a small Rectangle at that Point, or display or log the coordinates of
the Point.
Actual Results:
The X &amp; Y coordinates of the mouse event are transposed in the Point.
Rectangles appear farther to the right as the mouse is clicked farther down and
vice versa.
Expected Results:
The X &amp; Y coordinates of the mouse event should be accurately reflected in the
Point. If drawing a Rectangle, it should appear directly under the cursor.
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