GUI Part II Midterm
Your midterm assignment is divided
into three tasks:
1. Create a custom, re-usable dialog that inputs a name and password.
2. Create a derived CEdit class that will perform special text-formatting.
3. Write a new test program, using the above two items, from the component gallery.
Items 1 and 2 above will reflect a class, and that class must be packaged into the component gallery, for re-use. You are to hand in the project(s) for each on disk, as well as your test programs. You are to print the source code that you make changes too only, and hand in that printout as well.
You will also need to copy the files that were added to component gallery, and include those on your disk.
You are to create a login name and password dialog, similar to what appears below. If the Login name is blank, the OK button is to be disabled. When the user clicks OK or Cancel, the dialog will close. This dialog will not attempt to actually 'logon' to anything, but will simply retrieve a login name and password.
You must create a class for this dialog, called CPasswordDlg. You must add two member variables, called m_Login and m_Password, which will contain the user's input. Once the class is written, you are to add the dialog to the component gallery.
Answer the following:
1. Why do static controls have an underlined character?
2. Where was the component added, in relation to the normal gallery.
3. What was the name of the file added to componenet gallery.
Custom Edit Class
Write a custom class, derived from CEdit. When the user leaves the control (kill focus), the text in the field is converted to properly-formatted upper and lower case. For example, if the user typed 'mario giannini', when they leave that field, it is automatically re-formatted to 'Mario Giannini'.
This class should have two static member functions, that permits this feature to be turned off, or determine if the feature is enabled or not. You will need to add:
static bool SetConversion( bool Mode );
This function will set the 'conversion status' of all CCaseEdit objects to either do, or not do, the case conversion. Mode will be true if they should do the conversion, false if not. The function will return the previous conversion mode.
static bool GetConversion();
This function will return true, of CCaseEdit objects do the case conversion, and false if not.
The above functions should be static, so that by calling the SetConversion function to change the conversion status, you are changing it for all CCaseEdit objects in your program (a static data member).
You will also need to add the appropriate
handler for the new class to handle the kill focus notification.
That handler is not documented here, but must be written by you
(added via ClassWizard).
Your view class should have nothing specific to the formatting of the text string (the case conversion) in it. All this code is to be in the CCaseEdit class.
Your test program must have the following features:
You must add the two components from the Component Gallery, that you previously placed there, to this project.
The login dialog appears when the program first starts up, before the main window. If the user hits cancel, the program should terminte, otherwise it should continue as normal. Nothing more is done with the login password class.
There will be two edit boxes on the main window. When the user types in data, and moves between the fields, the first edit box will automatically convert the users text to correct upper-lower formatting. The second edit box does not have this ability (it is a normal edit box). This conversion behavior is dependent upon the Conversion menu item.
A Do Conversion menu item is to be added to your test program. It is a 'checked' menu item. If the item is checked, then the case-conversion described earlier is performed. If it is not checked, then the case conversion is not performed. The Do Conversion menu item should be added at the bottom of the Edit menu.
For the Do Conversion menu choice, you must provide an accelerator key. You must add the accelerator to the Accelerators resource. Use Control-D. You must display the accelerator in the menu option, so take a look at how the Copy and Paste items do it (examine their Caption property).
You will need to handle the COMMAND event for the Do Conversion menu item to enable/disable the conversion, and the UPDATE_COMMAND_UI event to check and un-check the menu item.
Note: If ClassWizard does not recognize your new CCaseEdit class in the Member Variable tab ('Control' category) after adding it to your project, then perform the following steps:
The program may save the last status of the user's 'Conversion Status' in the registry when the program terminates, and read it back when it starts up again. You should check the conversion status from the registry in the OnInitInstance of your CWinApp class. You can set a value of "Yes" or "No into the registry in the same function that handles the toggling of the status, via the menu selection.
The registry Section should be 'Settings', and the entry should be 'DoConversion'. This entry will be either "Yes" or "No", and should have a default of "Yes" if no entry exists in the registry.
Note: This entire assignment required me to type about 25 lines of code!