problem with winevent Function

[Mohammad]

Hi i am new for QT and i need to use winEvent function but an error appear when i try build my project:
my code is :

bool MainWindow::winEvent(MSG *message, long *result)
{
   //handling message...........
 
    return 0;
}

bool MainWindow::winEvent(MSG *message, long *result)
{
   //handling message...........

    return 0;
}

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this is the error prevent building:

C:\Users\ETC\Documents\QTProjects\Calculator-build-desktop-Qt_4_7_4_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug\..\Calculator\mainwindow.cpp:16: error: no 'bool MainWindow::winEvent(MSG*, long int*)' member function declared in class 'MainWindow'

C:\Users\ETC\Documents\QTProjects\Calculator-build-desktop-Qt_4_7_4_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug\..\Calculator\mainwindow.cpp:16: error: no 'bool MainWindow::winEvent(MSG*, long int*)' member function declared in class 'MainWindow'

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