Module gdk::functions

Functions

beep	Emits a short beep on the default display.
display_arg_name	Gets the display name specified in the command line arguments passed to gdk_init() or gdk_parse_args(), if any.
error_trap_pop	Removes an error trap pushed with error_trap_push(). May block until an error has been definitively received or not received from the X server. error_trap_pop_ignored() is preferred if you don’t need to know whether an error occurred, because it never has to block. If you don’t need the return value of error_trap_pop(), use error_trap_pop_ignored().
error_trap_pop_ignored	Removes an error trap pushed with error_trap_push(), but without bothering to wait and see whether an error occurred. If an error arrives later asynchronously that was triggered while the trap was pushed, that error will be ignored.
error_trap_push	This function allows X errors to be trapped instead of the normal behavior of exiting the application. It should only be used if it is not possible to avoid the X error in any other way. Errors are ignored on all Display currently known to the DisplayManager. If you don’t care which error happens and just want to ignore everything, pop with error_trap_pop_ignored(). If you need the error code, use error_trap_pop() which may have to block and wait for the error to arrive from the X server.
events_get_angle	If both events contain X/Y information, this function will return true and return in angle the relative angle from event1 to event2. The rotation direction for positive angles is from the positive X axis towards the positive Y axis.
events_get_center	If both events contain X/Y information, the center of both coordinates will be returned in x and y.
events_get_distance	If both events have X/Y information, the distance between both coordinates (as in a straight line going from event1 to event2) will be returned.
events_pending	Checks if any events are ready to be processed for any display.
flush	Flushes the output buffers of all display connections and waits until all requests have been processed. This is rarely needed by applications.
list_visuals	Lists the available visuals for the default screen. (See Screen::list_visuals()) A visual describes a hardware image data format. For example, a visual might support 24-bit color, or 8-bit color, and might expect pixels to be in a certain format.
notify_startup_complete	Indicates to the GUI environment that the application has finished loading. If the applications opens windows, this function is normally called after opening the application’s initial set of windows.
notify_startup_complete_with_id	Indicates to the GUI environment that the application has finished loading, using a given identifier.
pango_context_get	Creates a pango::Context for the default GDK screen.
pango_context_get_for_display	v3_22 Creates a pango::Context for display.
pango_context_get_for_screen	Creates a pango::Context for screen.
pixbuf_get_from_surface	Transfers image data from a cairo::Surface and converts it to an RGB(A) representation inside a gdk_pixbuf::Pixbuf. This allows you to efficiently read individual pixels from cairo surfaces. For GdkWindows, use gdk_pixbuf_get_from_window() instead.
program_class	Gets the program class. Unless the program class has explicitly been set with set_program_class() or with the --class commandline option, the default value is the program name (determined with g_get_prgname()) with the first character converted to uppercase.
property_delete	Deletes a property from a window.
property_get	Retrieves a portion of the contents of a property. If the property does not exist, then the function returns false, and GDK_NONE will be stored in actual_property_type.
query_depths	This function returns the available bit depths for the default screen. It’s equivalent to listing the visuals (list_visuals()) and then looking at the depth field in each visual, removing duplicates.
selection_convert	Retrieves the contents of a selection in a given form.
selection_owner_get	Determines the owner of the given selection.
selection_owner_get_for_display	Determine the owner of the given selection.
selection_owner_set	Sets the owner of the given selection.
selection_owner_set_for_display	Sets the Window owner as the current owner of the selection selection.
selection_send_notify	Sends a response to SelectionRequest event.
selection_send_notify_for_display	Send a response to SelectionRequest event.
set_allowed_backends	Sets a list of backends that GDK should try to use.
set_double_click_time	Set the double click time for the default display. See Display::set_double_click_time(). See also Display::set_double_click_distance(). Applications should not set this, it is a global user-configured setting.
set_program_class	Sets the program class. The X11 backend uses the program class to set the class name part of the WM_CLASS property on toplevel windows; see the ICCCM.
set_show_events	Sets whether a trace of received events is output. Note that GTK+ must be compiled with debugging (that is, configured using the --enable-debug option) to use this option.
shows_events	Gets whether event debugging output is enabled.
synthesize_window_state
test_render_sync	Retrieves a pixel from window to force the windowing system to carry out any pending rendering commands.
test_simulate_button	This function is intended to be used in GTK+ test programs. It will warp the mouse pointer to the given (x,y) coordinates within window and simulate a button press or release event. Because the mouse pointer needs to be warped to the target location, use of this function outside of test programs that run in their own virtual windowing system (e.g. Xvfb) is not recommended.
test_simulate_key	This function is intended to be used in GTK+ test programs. If (x,y) are > (-1,-1), it will warp the mouse pointer to the given (x,y) coordinates within window and simulate a key press or release event.
text_property_to_utf8_list_for_display	Converts a text property in the given encoding to a list of UTF-8 strings.
utf8_to_string_target	Converts an UTF-8 string into the best possible representation as a STRING. The representation of characters not in STRING is not specified; it may be as pseudo-escape sequences \x{ABCD}, or it may be in some other form of approximation.