![]() TextBox1->Text = "You have selected the C# option." TextBox1->Text = "You have selected the Visual Basic option." Private : System::Void radioButton3_Click(System::Object^ sender, System::EventArgs^ e) Fill in the event handler function the following code: In this case, this was the third radio button, but the handler still applies to all three buttons. Depending on the order in which you select the radio buttons, you will see the name of one of the buttons used in the event handler name. Event handler functions always have a name of the form control_event ( radioButton3_Click in this case). One event handler will be added that will apply to all three radio buttons. Click the Event button to display the events, and double-click in the blank space next to the Click event. Select all three radio button objects (using mouse or selecting with mouse click while holding down the Ctrl button), and then open the Properties editor. To do so, you need to add a handler for the radio buttons. Let's arrange for the text in the text box to be filled in automatically when the user clicks the radio buttons. Position the text box just to the right of the group box and below the combo box, and use the Properties editor to set the Multiline property to true so that it can display more than one line of text. Drag a TextBox from the Toolbox onto the form.Ĥ8. Reposition combo1 by setting its Location property to 256, 72. Select both the OK and Cancel buttons, and drag them to the lower- right corner of the form. To create more space to display a text box, set the form's Size property to 456, 400 to give enough space to display the text box next to the group box or you just can drag the edge of the form in the design page to resize it. The form was created with the default size of 300 by 300 pixels. Open the CppForm project, if it isn't already open. The following exercise shows you how to add an edit control to the form and manipulate the text it contains.Ĥ6. ![]() The default is HorizontalAlignment::Left. The default is 0.ĭetermines whether a multiline text box displays with scroll bars. If set to a value other than 0, masks the characters with the specified value as they are typed. The values can be CharacterCasing::Normal (the default), CharacterCasing::Upper, or CharacterCasing::Lower. ĭetermines whether the control modifies the case of characters as they are entered. If true, the Enter key will create a new line in a multiline text box instead of activating the default button for the form. The TextBox class adds several properties to the ones it inherits from TextBoxBase, as shown in the following table. Because it's possible to clear the undo buffer, you should check the CanUndo property before trying to undo operations. Text controls maintain an undo buffer, so it's possible to undo changes. The Lines property holds an array of String s that is used to represent the lines in a multiline edit control. Multiline text controls will use newline characters to break lines, whereas single-line controls will display newline characters as control characters (which usually display as a short vertical bar). Text boxes can be single-line or multiline, which is controlled by the Multiline property. Undoes the last clipboard or text change operation. Scrolls the control so that the caret is visible. Replaces the current selection with the contents of the clipboard. If false, they will scroll horizontally until a newline character is reached.Ĭlears the most recent operation from the control's undo buffer.Ĭopies the selected text to the clipboard. If true, multiline text boxes will word-wrap as necessary. Gets the length of the text in the control. Gets or sets the text displayed in the control. Gets or sets the length of the selection. Gets or sets the read-only status of the control. This enables you to size the text box so that it displays text correctly. Gets the preferred height in pixels for the current font. If true, the control is a multiline text box. Gets or sets a Boolean value representing whether the control's content has been modified. The default value is 0, which means that the length is limited only by the available memory. Represents the maximum number of characters that can be typed into a control. Gets or sets the collection of lines in a text box as an array of String s. If true, selected text in the control is dimmed when the focus passes to another control. Set to true if the last operation can be undone. Represents the background and foreground colors. If true, the control automatically resizes itself to fit its text. If true, the Tab key will enter a tab character into the control instead of moving to the next control in the tab order.
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