This function retrieves the number of characters in a specified string that will fit within a specified space and fills an array with the text extent for each of those characters. A text extent is the distance between the beginning of the space and a character that will fit in the space.
At a Glance
| Header file: | Wingdi.h |
| Windows CE versions: | 1.0 and later |
Syntax
BOOL GetTextExtentExPoint(HDC hdc, LPCTSTR lpszStr, int cchString,
int nMaxExtent, LPINT lpnFit, LPINT alpDx, LPSIZE lpSize);
Parameters
hdc
[in] Handle to the device context (DC).
lpszStr
[in] Long pointer to the null-terminated string for which extents are to be retrieved.
cchString
[in] Specifies the number of characters in the string pointed to by the lpszStr parameter.
nMaxExtent
[in] Specifies the maximum allowable width, in logical units, of the formatted string.
lpnFit
[out] Long pointer to an integer to receive a count of the maximum number of characters that will fit in the space specified by the nMaxExtent parameter. When the lpnFit parameter is NULL, the nMaxExtent parameter is ignored.
alpDx
[out] Long pointer to an array of integers to receive partial string extents. Each element in the array gives the distance, in logical units, between the beginning of the string and one of the characters that fits in the space specified by the nMaxExtent parameter. Although this array should have at least as many elements as characters specified by the cchString parameter, the function fills the array with extents only for as many characters as are given by the lpnFit parameter. If alpDx is NULL, the function does not compute partial string widths.
lpSize
[in] Long pointer to a SIZE structure that contains the dimensions of the string, in logical units when the function returns. This value cannot be NULL.
Return Values
Nonzero indicates success. Zero indicates failure. To get extended error information, call GetLastError.
Remarks
If both the lpnFit and alpDx parameters are NULL, calling the GetTextExtentExPoint function is equivalent to calling the GetTextExtentPoint function.
See Also