JVCL Help:TJvCaret
JVCL Help: TJvCaret Class
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TJvCaret
run\JvCaret.pas
Summary
Helper object to store caret settings in.
Pascal
run\JvCaret.pas
TJvCaret = class(TPersistent);
Description
TJvCaret is a helper object to store the settings for the custom caret in. It is used by some of the edit controls in JVCL, but it can be used for any control that is derived from TWinControl.
If Bitmap is assigned, the Width and Height properties are set to 0 and Gray is set to false.
If Gray is set to true or Width and/or Height are specified, Bitmap is ignored.
If no bitmap has been assigned, Gray is set to false and both Width and Height are 0, no custom caret will be created, but the standard Windows caret will be used instead.
A control that wants to use a custom caret should take care of the following:
- As soon as your control has focus (and your application is the active application) you may callTJvCaret.CreateCaret to create and display the caret (if needed you can use the Windows API call for HideCaret to temporarily hide it).
- If the control loses focus or the application will be deactivated (because another applicationgets focus) you must call TJvCaret.DestroyCaret * Use the Window API calls to hide/show the caret or to get or change its location (HideCaret, ShowCaret, GetCaretPos, SetCaretPos respectively).
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