Display Texts in a Window

1. MFC provides a function TextOut() to display texts. The syntax is: TextOut(x, y, str).
   • Note that you should remember to uncheck "Unicode". Otherwise you may encounter a syntax error at compiling:
     error C2664: 'BOOL CDC::TextOutW(int,int,const CString &)' : cannot convert parameter 3 from 'const char [2]' to 'const CString &'
   • In case you forgot to uncheck that, you might convert the string with the macro _T() so that it will automatically convert your string to a suitable format.
2. Draw a cosine function and annotate the X-axis, Y-axis, and the origin as below.