---
name: "XmTextFieldReplaceWcs"
section: "3"
platform: "linux"
package: "openmotif"
version: "2.3.8-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/XmTextFieldReplaceWcs"
---

# XmTextFieldReplaceWcs(3)

A TextField function that replaces part of a wide character string in a TextField widget

## NAME

**XmTextFieldReplaceWcs** — A TextField function that replaces part of a wide character string in a TextField widget

## SYNOPSIS

```
#include <Xm/TextF.h>
void XmTextFieldReplaceWcs(
Widget widget,
XmTextPosition from_pos,
XmTextPosition to_pos,
wchar_t *wcstring);
```

## DESCRIPTION

**XmTextFieldReplaceWcs** replaces part of the wide character string in the TextField widget. The character positions begin at 0 (zero) and are numbered sequentially from the beginning of the text.

An example text replacement would be to replace the second and third characters in the text string. To accomplish this, the parameter *from\_pos* must be 1 and *to\_pos* must be 3. To insert a string after the fourth character, both parameters, *from\_pos* and *to\_pos*, must be 4.

This routine calls the widget's **XmNvalueChangedCallback** and verification callbacks, either **XmNmodifyVerifyCallback** or **XmNmodifyVerifyCallbackWcs**, or both. If both verification callback lists are registered, the procedures of the **XmNmodifyVerifyCallback** list are executed first and the resulting data is passed to the **XmNmodifyVerifyCallbackWcs** callbacks. If the **XmNcursorPosition** resource is greater than or is the same value as *from\_pos*, the **XmNmotionVerifyCallback** is called.

- *widget*

  Specifies the TextField widget ID

- *from\_pos*

  Specifies the start position of the text to be replaced

- *to\_pos*

  Specifies the end position of the text to be replaced

- *wcstring*

  Specifies the wide character string value to be added to the TextField widget

For a complete definition of TextField and its associated resources, see [**XmTextField**(3)](/XmTextField/3.md).

## RELATED

[**XmTextField**(3)](/XmTextField/3.md) and [**XmTextFieldReplace**(3)](/XmTextFieldReplace/3.md).