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Figure 15-8. Filling in new user information When you are finished filling in the basic information, select the Schema Privileges tab. In this tab, any privileges that you move from the rightmost Available Privileges list to the middle Assigned Privileges list will be granted for the schema (database) that you have selected in the leftmost list, entitled Schema. In Figure 15-9, you can see that for this new user, we have granted the SELECT, INSERT, UPDATE, and DELETE privileges for the ToyStore schema. If you click the Resource Limits tab, you can set the maximum connections, queries, and updates values for this user, as shown in Figure 15-10.

The Font class also provides a Height property, which returns the line spacing of your chosen font in pixels. This setting allows you to perform calculations when you are drawing special graphics or text on a control manually. For example, you could manually space lines the appropriate amount when drawing text directly onto a form background.

Tip A traditional default font for Windows programs is Microsoft Sans Serif. However, applications since

3. Information you enter in the Additional Information is stored in the mysql.user_info system table.

OracleNETDatabaseAssembler.cs correspondingly. Open the OracleNETDatabase.cs file, and make the changes highlighted in bold in Listing 13-1.

Windows 98 consistently use the more attractive Tahoma font (which is also better for input, as it distinguishes between characters like a lowercase L and uppercase I). You should use the Tahoma font in your applications.

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When you have finished making your changes, click the Apply Changes button. Your user will be added to the user grant table with the Host column value of '%'. Usually, this is not what you really want, since it is better to have a more specific entry for the Host column. To create an entry in mysql.user with a more specific Host value, right-click the username in the User Accounts area and select Add Host. In the Add Host dialog box, shown in Figure 15-11, select the Hostname or IP option and type in your desired domain or host address. Click OK, and you will see an additional node under the new username in the User Accounts area.

Note that font families are set using a string rather than a type-safe enumerated property. If you try to create an object using a name that does not correspond to an installed font, .NET automatically (and unhelpfully) defaults to the Microsoft Sans Serif font. An error does not occur. You may want to explicitly check the Font.Name property to check if this automatic substitution has been made. To determine what fonts are installed on the system, you can enumerate through them with the System.Drawing.Text.InstalledFontCollection class. The following example adds the name of every installed font to a list box. InstalledFontCollection fonts = new InstalledFontCollection(); foreach (FontFamily family in fonts.Families) { lstAvailableFonts.Items.Add(family.Name); } The online samples for this chapter (in the Downloads area at www.apress.com) include a FontViewer utility that uses this technique to create a list of fonts. The user can choose a font from a drop-down list control, and a sample line of text will be painted directly on the window (see Figure 2-7). To perform the font painting, the application uses some of the GDI+ methods you ll see in 7.

Note You will notice that the default DAO classes provided by Microsoft come with a number of grayed-out comments that look like XML tags. Those aren t exactly comments; they re directives used to generate documentation. For ease of readability, these comments have been removed from the code shown in Listing 13-1, but I recommend that you keep them in your code for documentation purposes.

Windows has a lot of font conventions. Different fonts are used for different screen elements. You can retrieve the correct default font using the System.Drawing.SystemFonts class, which includes handy properties like CaptionFont, DefaultFont, DialogFont, IconTitleFont, MenuFont, MessageBoxFont, SmallCaptionFont, and StatusFont. Using these font objects ensures your application blends in with the scenery. Here's how you assign the caption font to a control: ctrl.Font = SystemFonts.CaptionFont; The SystemFont class differs from other classes dedicated to system settings, like SystemColors, SystemBrushes, and SystemPens. The difference is that when you retrieve one of the properties from SystemFont, a new Font object is created. That means if you re using a font for dynamic drawing (a topic explored in 7), you should release the font when you re finished by calling its Dispose() method. Very few applications are brought to their knees by wasting a few extra font handles, but it s good to get in the habit of cleaning up every resource you use before a problem develops.

Figure 15-11. The Add Host dialog box Selecting the new node will change the right content area to display the entry for the node.

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