Qobject have eventfilter, function very strong (arbitrary processing, such as to qlineedit participle)

I believe everyone has used a dictionary! Because English is not very good ... O (∩_∩) o~, so often the translation of the word!

• Briefly
• Realize
  • Effect
  • Source
• More references

Realize

Principle: Move the mouse over a word, get the mouse position, and then in the corresponding position to take the word, translation!

Based on this principle, we implement a qtooltip for each word.

Effect

Source

Create Qtextedit formations, and then listen to events through Installeventfilter.

M_ptextedit= new qtextedit (this); M_ptextedit- >setobjectname ( "Highlightlabel"); M_ptextedit->append ( Qstring::fromlocal8bit ( "one go, two or three Miles"); m_ptextedit ->append (Qstring::fromlocal8bit ( " Youth is not old, struggle not only! ")); M_ptextedit->append (Qstring::fromlocal8bit (" You were not alone. ")); M_ptextedit->append (Qstring::fromlocal8bit ( //Install event filter M_ptextedit->installeventfilter (this);   

Implement EventFilter, Judge the event type is Qevent::tooltip, get the cursor, take the word.

BOOL MainWindow:: EventFilter (Qobject*obj, Qevent*event) {if (obj= = M_ptextedit) {Event is a hintif (event-Type ()= = Qevent:: ToolTip) {qhelpevent*phelpevent = static_cast<qhelpevent *> (event); //Get cursor qtextcursor cursor = m_ptextedit->cursorforposition (phelpevent->pos ()); cursor.  Select (Qtextcursor:: wordundercursor);//real participle //Display message Qtooltip:: Showtext (Phelpevent- Globalpos (), cursor. SelectedText ()); return true;}} return qdialog:: EventFilter (obj, event);}            

If you are unfamiliar with event filtering, see more references.

http://blog.csdn.net/liang19890820/article/details/51804098

Qobject have eventfilter, function very strong (arbitrary processing, such as to qlineedit participle)