Set background images for GMF applications

Override the configuregraphicalviewer () method of xxxdiagrameditor. Add the followingCodeYou can. However, after a background image is added, the gridlines cannot be displayed, which may be due to the order of layers.

 /**  * @ Generated not  */  Protected   Void  Configuregraphicalviewer (){  Super  . Configuregraphicalviewer ();  //////  Background layer  ////////////////// Layer backgroundlayer = New Layer () {@ override  Protected   Void  Paintfigure (Graphics graphics ){  Super  . Paintfigure (graphics); graphics. drawimage (networkdiagrameditorplugin. getinstance (). getbundledimage ( "Images/worldmap_no_text.gif"), 0 , 0 ) ;}}; Backgroundlayer. setsize ( 4990,248 4 );  ////////////////////////////////////////  Diagramrooteditpart Root = (Diagramrooteditpart) getdiagramgraphicalviewer (). getrooteditpart (); layeredpane printablelayers = (Layeredpane) root. getlayer (layerconstants. printable_layers); freeformlayer extlabelslayer = New  Freeformlayer (); extlabelslayer. setlayoutmanager (  New  Delegatinglayout (); printablelayers. addlayerafter (extlabelslayer, networkeditpartfactory. external_node_labels_layer, layerconstants. primary_layer );  //////  Insert background layer  ////////// /  Printablelayers. addlayerbefore (backgroundlayer, networkeditpartfactory. external_node_labels_layer, layerconstants. primary_layer );  ////////////////////////////////////////  Layeredpane scalablelayers = (Layeredpane) root. getlayer (layerconstants. scalable_layers); freeformlayer scaledfeedbacklayer = New  Freeformlayer (); scaledfeedbacklayer. setenabled (  False ); Scalablelayers. addlayerafter (scaledfeedbacklayer, layerconstants. scaled_feedback_layer, diagramrooteditpart. decoration_unprintable_layer );} 

Reference: Set a background image for the graphic editor