If Immediate is false, the mouse pointer does not change to the value of the DragCursor property and dragging does not begin until the user moves the mouse pointer the number of pixels specified by the Threshold parameter. Also for OnStartDrag the documentation says: Occurs when the user begi...
Memo1: TMemo;procedureFormCreate(Sender: TObject);procedureFormDestroy(Sender: TObject);private//IDropTargetfunctionDragEnter(constdataObj: IDataObject; grfKeyState: DWORD; pt: TPoint;vardwEffect: DWORD): HResult;StdCall;functionDragOver(grfKeyState: DWORD; pt: TPoint;vardwEffect: DWORD): HResul...
Memo1: TMemo;procedureFormCreate(Sender: TObject);procedureFormDestroy(Sender: TObject);private//IDropTargetfunctionDragEnter(constdataObj: IDataObject; grfKeyState: DWORD; pt: TPoint;vardwEffect: DWORD): HResult;StdCall;functionDragOver(grfKeyState: DWORD; pt: TPoint;vardwEffect: DWORD): HResul...
1 .NET 2.0 C# Treeview Drag/Drop within TreeNodes 0 Drag n Drop in .net Treeview 6 Drag-Drop in treeview, insert between nodes 7 VirtualTreeview drag and drop to arrange nodes in a list 2 Virtualtreeview dragNdrop 1 Treeview drag and drop without destination node 0 (Delphi...
拖放(DragDrop)是Windows提供的一种快捷的操作方式。作为基于Windows的开发工具,Delphi同样支持拖放操作,而且开发应用系统的拖放功能十分方便,真正体现了Delphi 的强大功能和方便性。 Delphi提供的所有控件(Control,即能获得输入焦点的部件)都支持拖放操作,并有相应的拖放属性、拖放事件和拖放方法。下面我们先介绍控件的...
DROPTARGET 用以指定窗体是否为目前DRAG AND DROP动作的目标 FLOATING 用以指示此窗体是否正在停泊在另一个视窗内 FORMSTATE 用于指示此窗体所处状态 FORMSTYLE 用于指示窗体的样式 HELPFILE 用于指定HELP文件 ICON 指定窗体最小化时所显示的ICON KEYPREVIEW 指定此窗体是否需在目前的ACTIVE组件之前取得键盘输入 ...
EndDrag方法中止一个对象的被拖动状态 它有一个布尔参数Drop 如果Drop设置为True 被拖动的对象在当前位置放下(能否被接受由目标控件决定) 如果Drop设置为False 则拖动就地被取消 下面一段程序表明当拖动进入一控制面板时拖动被取消 procedure TForm Panel DragOver(Sender Source: TObject; X Y: ...
procedure TForm8.Memo1DragDrop(Sender, Source: TObject; X, Y: Integer); begin if ListBox1.ItemIndex>-1 then Memo1.SelText :=Listbox1.Items[ListBox1.ItemIndex]; end; 1. 2. 3. 4. 5. 更复杂的,请参考https://prog.hu/tudastar/90383/drag-and-drop-tmemo ...
DropTARGET 用以指定窗体是否为目前DRAG AND Drop动作的目标FLOATING 用以指示此窗体是否正在停泊在另一个视窗内FORMSTATE 用于指示此窗体所处状态FORMSTYLE 用于指示窗体的样式HELPFILE 用于指定HELP文件ICON 指定窗体最小化时所显示的ICONKEYPREVIEW 指定此窗体是否需在目前的ACTIVE组件之前取得键盘输入MDICHILDCOUNT 用于...