This message is sent by an application to retrieve the coordinates of the specified character in an edit control.
At a Glance
| Header file: | Winuser.h |
| Windows CE Versions: | 1.0 and later |
Syntax
EM_POSFROMCHAR wCharIndex = (WPARAM) wParam;
Parameters
wCharIndex
Specifies the zero-based index of the character.
Return Values
The return value is the position of the character, (x, y). For a single-line edit control, the y-coordinate is always zero.
Remarks
On return, the x-coordinate of the character is contained in the LOWORD of the LRESULT and the y-coordinate is contained in the HIWORD of the LRESULT.
Any index beyond the last character returns –1.
A returned coordinate can be negative if the character has been scrolled outside the edit control’s client area. The coordinates are truncated to integer values.
If wCharIndex is the index of a line delimiter, the returned coordinates are of the position just past the last visible character in the line.
If wCharIndex is greater than the index of the last character in the control, the returned coordinates are of the position just past the last character of the control.
See Also