Ivor Horton's Beginning Visual C++ 2012

USING AN EDIT BOX CONTROL

An edit box control is for managing text entry to an application. You will use an edit box control to add annotations to a sketch in Sketcher. You’ll need a new Sketcher element type, CText, that encapsulates a text string, and a menu item to set TEXT mode for creating elements. Because a text element needs only one reference point, you can create it in the OnLButtonDown() handler in the view class. You’ll also need a new item in the Element menu to set TEXT mode. You’ll add this text capability to Sketcher in the following sequence:

1. Create a dialog resource and its associated class with an edit box control for input.

2. Add the new menu item.

3. Add the code to open the dialog for creating a CText element.

4. Add support for creating CText elements.

Creating an Edit Box Resource

Create a new dialog resource in Resource View by right-clicking the Dialog folder and selecting Insert Dialog. Change the ID for the new dialog to IDD_TEXT_DLG, and the Caption property value for the dialog to Enter Text.

To add an edit box, select the Edit Control icon in the Toolbox pane and click the position in the dialog where you want to place it. You can adjust the size of the edit control by dragging its borders, and you can alter its position in the dialog by dragging the whole thing around. You can display the properties for the edit box by right-clicking it and selecting Properties from the pop-up. You could first change its ID to IDC_EDIT_TEXT, as shown in ...