Tooltip gets trucated

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Hi Everyone,

I am finding an issue where in I have a Text which is longer than a single line with no spaces. This text is not displayed completely in the tool tip. It gets truncated.

I make use of CDC for the tooltip display rectangle,

C++

CDC* pDC = GetDC();
CRect rect(0, 0, 0, 0);
CString sComment = "this is a  comment bigggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg  comment  2 2 2"
    pDC->DrawText(sComment, &rect, DT_CALCRECT | DT_LEFT | DT_WORDBREAK | DT_NOPREFIX | DT_TOP);
int iheight = rect.Height(); // It wont return the correct rectangle height

//Output is
this is a comment biggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

Can anyone tell me what the issue is.

Thanks,
Chethana

Posted 18-Oct-10 8:20am

Member 7528548

Updated 18-Oct-10 20:51pm

v5

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manchukuo · Answer 1 · 2010-10-18T10:30:00

does it even compiles?

C++

virtual int DrawText(
   LPCTSTR lpszString,
   int nCount,
   LPRECT lpRect,
   UINT nFormat 
);
int DrawText(
   const CString& str,
   LPRECT lpRect,
   UINT nFormat 
);

drawtext needs a pointer to a RECT you need to use &rect in your code, but then you are using DT_CALCRECT which will return you the needed width and height of your rect, you can do a first call to DrawText to get the needed dimenions of the rect and then draw it something like:

C++

CDC* pDC = GetDC();
   CRect rect(0, 0, 0, 0);
   CString sComment = "this is a  comment bigggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg  comment  2 2 2"
       pDC->DrawText(sComment, &rect, DT_CALCRECT | DT_LEFT | DT_WORDBREAK | DT_NOPREFIX | DT_TOP);

       pDC-&gt;DrawText(sComment, &rect, DT_LEFT | DT_WORDBREAK | DT_NOPREFIX | DT_TOP);
   int iheight = rect.Height(); // It wont return the correct rectangle height

that should help