拖放treeview组件中的节点

软件技术国家教学资源库建设项目软件开发素材之C源代码一、名称拖放TREEVIEW组件中的节点二、创建或搜集相关信息搜集单位重庆电子工程职业学院搜集时间20120805来源互联网三、适用对象学生、教师、C及ASPNET项目开发人员、相关技术人员等。四、功能简介实现拖放TREEVIEW组件中的节点。五、程序代码程序名称PROGRAMCSUSINGSYSTEMUSINGSYSTEMCOLLECTIONSGENERICUSINGSYSTEMLINQUSINGSYSTEMWINDOWSFORMSNAMESPACEDRAGDROPTREENODESTATICCLASSPROGRAM/应用程序的主入口点。/STATHREADSTATICVOIDMAINAPPLICATIONENABLEVISUALSTYLESAPPLICATIONSETCOMPATIBLETEXTRENDERINGDEFAULTFALSEAPPLICATIONRUNNEWFORM1程序名称FORM1CSUSINGSYSTEMUSINGSYSTEMCOLLECTIONSGENERICUSINGSYSTEMCOMPONENTMODELUSINGSYSTEMDATAUSINGSYSTEMDRAWINGUSINGSYSTEMLINQUSINGSYSTEMTEXTUSINGSYSTEMWINDOWSFORMSNAMESPACEDRAGDROPTREENODEPUBLICPARTIALCLASSFORM1FORMPUBLICFORM1INITIALIZECOMPONENTPRIVATEVOIDTREEVIEW1_ITEMDRAGOBJECTSENDER,SYSTEMWINDOWSFORMSITEMDRAGEVENTARGSE/启动拖放操作，设置拖放类型为MOVE移动DODRAGDROPEITEM,DRAGDROPEFFECTSMOVEPRIVATETREENODEOLDENTERNODE/保存前一个鼠标进入的TREENODEPRIVATEVOIDTREEVIEW1_DRAGENTEROBJECTSENDER,SYSTEMWINDOWSFORMSDRAGEVENTARGSE/获取TREENODE类型的数据内容OBJECTDATAEDATAGETDATATYPEOFTREENODE/如果有数据，拖放目标允许移动IFDATANULLEEFFECTDRAGDROPEFFECTSMOVEELSEEEFFECTDRAGDROPEFFECTSNONE/获得当前TREEVIEW的引用TREEVIEWTHETREETREEVIEWSENDER/得到鼠标进入的TREENODE的引用TREENODEENTERNODETHETREEGETNODEATTREEVIEW1POINTTOCLIENTNEWPOINTEX,EYIFENTERNODENULL/改变进入TREENODE的背景色ENTERNODEBACKCOLORCOLORBLUE/保存此TREENODE，进入下一个时还原背景色OLDENTERNODEENTERNODEPRIVATEVOIDTREEVIEW1_DRAGOVEROBJECTSENDER,SYSTEMWINDOWSFORMSDRAGEVENTARGSE/修改鼠标进入TREENODE的背景色，还原上一个TREENODE的背景色TREEVIEWTHETREETREEVIEWSENDERTREENODEENTERNODETHETREEGETNODEATTREEVIEW1POINTTOCLIENTNEWPOINTEX,EYIFENTERNODENULLENTERNODEBACKCOLORCOLORBLUEOLDENTERNODEENTERNODEPRIVATEVOIDTREEVIEW1_DRAGDROPOBJECTSENDER,SYSTEMWINDOWSFORMSDRAGEVENTARGSE/得到拖放数据，并转换为TREENODE型TREENODETHENODETREENODEEDATAGETDATATYPEOFTREENODETREEVIEWTHETREETREEVIEWSENDER/得到当前鼠标进入的TREENODE，即拖放目标TREENODETREENODETARGETNODETHETREEGETNODEATTREEVIEW1POINTTOCLIENTNEWPOINTEX,EYIFTARGETNODENULLTREENODETARGETPARENTTARGETNODEPARENT/删除拖放的TREENODETHENODEREMOVE/添加到目标TREENODE下TARGETNODENODESADDTHENODETARGETNODEBACKCOLORCOLORWHITETHETREESE