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Objektorientiertes Programmieren: Mit Beispielen und Übungen by Ute Claussen PDF

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The following section describes how to make your change stick. 5. Changing the cursor with specific keys. Making the Change Stick The problem with your drawing program is that the cursor is redrawn every time you move the mouse. There must be some way of turning off this behavior. Each time the cursor needs to be redrawn--because the mouse has moved, because another window that was in front of your application has gone away, or because of whatever other reason--a WM_SETCURSOR event message is sent to your application.

In the second phase, you will add the first of the two timers. This first timer will control the clock on the application dialog. In the third phase, you will add the second timer, which the user can tune, start, and stop as desired. To create today's application, follow these steps: 1. Create a new project, named Timers, using the same AppWizard settings that you've used for the past three days. Specify the application title as Timers. 2. 1. Remember that when you place a control on the window, you can right-click the mouse to open the control's properties from the pop-up menu.

Coding the Message Box Dialogs For the first command button (the Yes, No, Cancel button), create a function on the clicked event using the Class Wizard, just as you did on previous days. 1. 1. THE OnYesnocancel FUNCTIONS. 1: void CDialogsDlg::OnYesnocancel() 2: { 3: // TODO: Add your control notification handler code here 4: 5: /////////////////////// 6: // MY CODE STARTS HERE 7: /////////////////////// 8: 9: int iResults; // This variable will capture the button selection 10: 11: // Ask the user 12: iResults = MessageBox("Press the Yes, No, or Cancel button", 13: "Yes, No, Cancel Dialog", 14: MB_YESNOCANCEL | MB_ICONINFORMATION); 15: 16: // Determine which button the user clicked 17: // Give the user a message showing which button was clicked 18: switch (iResults) 19: { 20: case IDYES: // The Yes button?

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C++ 6 21days


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