Use the Caption property to access the control's caption. The Change event notifies your application when the control's caption is changed. The Caption property erases the control's operators and operation stack and replaces the control's caption. Use the Execute method to execute operations. Use the Buttons property to assign a different matrix of digits and operators to the control.

The following sample displays the control's caption as soon as user types characters in the control:

Private Sub CalcCombo1_Change()
    With CalcCombo1
        Debug.Print .Caption
    End With
End Sub 

The Caption property supports built-in HTML format like follows:

• <b>  bold </b> bolds a part of the caption.
• <u> underline </u> specifies that the portion should appear as underlined. 
• <s> strikeout </s> specifies that the portion should appear as strikeout. 
• <i> italic </i> specifies that the portion should appear as italic. 
• <fgcolor=FF0000> fgcolor </fgcolor> changes the foreground color for a portion.
• <bgcolor=FF0000> bgcolor </bgcolor> changes the background color for a portion.
• <br> breaks a line.
• <solidline> draws a solid line. If has no effect for a single line caption.
• <dotline> draws a dotted line. If has no effect for a single line caption.
• <upline> draws the line to the top of the text line
• <r> aligns the rest of the text line to the right side. It has no effect if the caption contains a single line.

The following sample displays the 'Cannot execute the operation' string:

CalcCombo1.Caption = "Cannot <b>execute</b> the operation."

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