%gtkdocentities; ]> Both GtkSourceView 3 and GtkSourceView 4 depend on GTK+ 3. GtkSourceView 3.24 is the latest stable GtkSourceView 3 version. Before continuing this porting guide, you should use the 3.24 version without using any deprecated API. For GtkSourceView 4, the pkg-config name is: gtksourceview-4 To compile a program that uses GtkSourceView 4, you can for example use the following command: $ gcc hello.c `pkg-config --cflags --libs gtksourceview-4` -o hello All the deprecated APIs have been removed. Only <gtksourceview/gtksource.h> can be included directly. There were already warnings about it in GtkSourceView 3. The warnings have been changed to errors. Only the version 2 of the GtkSourceView language definition file format is supported (for *.lang files, used for syntax highlighting). The support for the version 1 has been dropped. gtk_source_completion_item_new2() has been renamed to gtk_source_completion_item_new(). gtk_source_search_context_forward2() has been renamed to gtk_source_search_context_forward(). gtk_source_search_context_forward_finish2() has been renamed to gtk_source_search_context_forward_finish(). gtk_source_search_context_backward2() has been renamed to gtk_source_search_context_backward(). gtk_source_search_context_backward_finish2() has been renamed to gtk_source_search_context_backward_finish(). gtk_source_search_context_replace2() has been renamed to gtk_source_search_context_replace(). The GtkSourceSearchContext:settings property is now construct-only. No API changes. The API of the GtkSourceView::move-lines keybinding signal has been simplified: the copy parameter was deprecated and has been removed; and the count parameter has been replaced by the down boolean. No API changes. In order to have a better *.gir file and have less metadata to generate the *.vapi for Vala, the following change has been made: gtk_source_completion_show() has been renamed to gtk_source_completion_start(). The function conflicted with the GtkSourceCompletion::show signal. Note that in Vala this doesn't require code changes because the method was already renamed to start() in GtkSourceView 3. Other changes in 3.99.7: For i18n initialization, the gtk_source_init() function now needs to be called. There is also the gtk_source_finalize() function which is convenient when using memory debugging tools.