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All rights reserved. - 4 - Working with Timers 51 52 Teach Yourself Visual C++ 6 in 21 Days -5Getting User Feedback--Adding Dialog Boxes to Your Application • Using Pre-existing (or System) Dialog Windows ♦ Using Message Boxes ♦ Using Common Dialogs • Creating Your Own Dialog Windows ♦ Creating the Dialog Window ♦ Using the Dialog in Your Application • Summary • Q&A • Workshop ♦ Quiz ♦ Exercises With most applications that you might use, there are numerous situations where the application asks you for information--how you want the application configured or whether you want to save your work before exiting, for example.

1. 1. THE OnMouseMove FUNCTION. y, RGB(0, 0, 17: } 18: 19: /////////////////////// 20: // MY CODE ENDS HERE 21: /////////////////////// 22: 23: CDialog::OnMouseMove(nFlags, point); 24: } point) and/or call default down 0)); Look at the function definition at the top of the listing. You will notice that two arguments are passed into this function. The first of these arguments is a set of flags that can be used to determine whether a mouse button is depressed (and which one). This determination is made in the first line of your code with the if statement: 30 31 if ((nFlags & MK_LBUTTON) == MK_LBUTTON) In the first half of the condition being evaluated, the flags are filtered down to the one that indicates that the left mouse button is down.

5. Open the Class Wizard. Select WM_MOUSEMOVE from the list of messages, and add a function by clicking the Add Function button. Click the OK button to accept the suggested function name. 6. 1. 1. THE OnMouseMove FUNCTION. y, RGB(0, 0, 17: } 18: 19: /////////////////////// 20: // MY CODE ENDS HERE 21: /////////////////////// 22: 23: CDialog::OnMouseMove(nFlags, point); 24: } point) and/or call default down 0)); Look at the function definition at the top of the listing. You will notice that two arguments are passed into this function.

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