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CXTPReportRecordItem::GetTooltip() and const |
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zitz 
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Joined: 05 October 2008 Status: Offline Points: 112 |
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 Topic: CXTPReportRecordItem::GetTooltip() and constPosted: 28 November 2009 at 9:29am |
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For what added const? (everywhere where it is called, it is not const)
I overload CXTPReportRecordItem::GetTooltip() and I can not call from it GetCaption for example  |
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Xtreme ToolkitPro v13.1.0, static, VC++6
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mdoubson
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Joined: 17 November 2008 Status: Offline Points: 1705 |
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Posted: 28 November 2009 at 11:07pm |
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Why "added" -
ver 12.1:
//-----------------------------------------------------------------------
// Summary:
// Returns the text tool tip for the item
// Returns:
// The text tool tip for the item.
//-----------------------------------------------------------------------
virtual CString GetTooltip() const;
//-----------------------------------------------------------------------
// Summary:
// Call this member to set/change the item tool tip.
// Parameters:
// lpszTooltip - Tool tip of the item
//-----------------------------------------------------------------------
virtual void SetTooltip(LPCTSTR lpszTooltip);
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zitz
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Posted: 30 November 2009 at 9:47am |
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My question is: why "const"?
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mgampi
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Posted: 30 November 2009 at 3:10pm |
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Because GetTooltip does not change the content of the class!
Take a look at good C++ books about 'const correctness', e.g. 'Exeptional C++'... If you really need a non-const version, you can cast the const away (const_cast<>), but this is not recommended. |
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Martin
Product: Xtreme Toolkit v 19.0.0, new Projects v 19.1.0 Platform: Windows 10 v 1909 (64bit) Language: VC++ 2017 |
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zitz
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Posted: 01 December 2009 at 1:03am |
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Martin, I know that this is not recommended (I am a little know C++
 ) - Because of this I made a post on this forum. Who said that GetTooltip does not change the content of the class? It is virtual and i want to change the content! Does GetCaption change the content of the class? But it is not const! I only told library's developers about the architectural limitations. |
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