ShowCaret function (winuser.h)
Makes the caret visible on the screen at the caret's current position. When the caret becomes visible, it begins flashing automatically.
Syntax
BOOL ShowCaret(
[in, optional] HWND hWnd
);
Parameters
[in, optional] hWnd
Type: HWND
A handle to the window that owns the caret. If this parameter is NULL, ShowCaret searches the current task for the window that owns the caret.
Return value
Type: BOOL
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
ShowCaret shows the caret only if the specified window owns the caret, the caret has a shape, and the caret has not been hidden two or more times in a row. If one or more of these conditions is not met, ShowCaret does nothing and returns FALSE.
Hiding is cumulative. If your application calls HideCaret five times in a row, it must also call ShowCaret five times before the caret reappears.
The system provides one caret per queue. A window should create a caret only when it has the keyboard focus or is active. The window should destroy the caret before losing the keyboard focus or becoming inactive.
Examples
For an example, see Creating and Displaying a Caret.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | winuser.h (include Windows.h) |
| Library | User32.lib |
| DLL | User32.dll |
| API set | ext-ms-win-ntuser-caret-l1-1-0 (introduced in Windows 8) |
See also
Conceptual
Reference