TTM_SETTITLE message

Adds a standard icon and title string to a tooltip.

wParam

Set wParam to one of the following values to specify the icon to be displayed. As of Windows Vista and later, this parameter can also contain an HICON value. Any value greater than TTI_ERROR_LARGE is assumed to be an HICON.

Expand table

Value	Meaning
TTI_NONE	No icon.
TTI_INFO	Info icon.
TTI_WARNING	Warning icon
TTI_ERROR	Error Icon
TTI_INFO_LARGE	Large error Icon
TTI_WARNING_LARGE	Large error Icon
TTI_ERROR_LARGE	Large error Icon

lParam

Pointer to the title string. You must assign a value to lParam.

Returns TRUE if successful, FALSE if not.

The title of a tooltip appears above the text, in a different font. It is not sufficient to have a title; the tooltip must have text as well, or it is not displayed.

When wParam contains an HICON, a copy of the icon is created by the tooltip window.

When calling TTM_SETTITLE, the string pointed to by lParam must not exceed 100 TCHARs in length, including the terminating NULL.

The following example shows how to add a title and a system icon to a tooltip.

// hwndTip is the handle of the tooltip window.
HICON hIcon = LoadIcon(NULL, IDI_INFORMATION);
SendMessage(hwndTip, TTM_SETTITLE, (WPARAM)hIcon, L"Title text");
DestroyIcon(hIcon);

About Tooltip Controls