Version 2 of the source code for the Queue version of the About Visual Basic CalcPad four function calculator is on the next page. The code has been used as an example for several articles, but this version is still not completely consistent with the behavior of the Windows calculator. It has been retained on the site as as example of the use of the Queue object only.
I recommend that download and use version 3 for your own use. This is available using a link on the last page of the article User Control Components in VB.NET.
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