Rounding package:gtk3

Asks the widget that the input context is attached to to delete characters around the cursor position by emitting the imContextDeleteSurrounding signal. In order to use this function, you should first call imContextGetSurrounding to get the current context, and call this function immediately afterwards to make sure that you know what you are deleting. You should also account for the fact that even if the signal was handled, the input context might not have deleted all the characters that were requested to be deleted. This function is used by an input method that wants to make substitutions in the existing text in response to new input. It is not useful for applications.

This signal is emitted when the input method needs to delete all or part of the context surrounding the cursor. Parameters: offset - the character offset from the cursor position of the text to be deleted. A negative value indicates a position before the cursor. n_chars - the number of characters to be deleted. Returns True if the signal was handled.

Retrieves context around the insertion point. Input methods typically want context in order to constrain input text based on existing text; this is important for languages such as Thai where only some sequences of characters are allowed. This function is implemented by emitting the imContextRetrieveSurrounding signal on the input method; in response to this signal, a widget should provide as much context as is available, up to an entire paragraph, by calling imContextSetSurrounding. Note that there is no obligation for a widget to respond to the imContextRetrieveSurrounding signal, so input methods must be prepared to function without context.

This signal is emitted when the input method requires the context surrounding the cursor. The callback should set the input method surrounding context by calling imContextSetSurrounding. Returns True if the signal was handled.

Sets surrounding context around the insertion point and preedit string. This function is expected to be called in response to the imContextRetrieveSurrounding signal, and will likely have no effect if called at other times.