Example





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GdPicture14 Namespace / GdViewer Class / IsRectEditing Method

IsRectEditing Method (GdViewer)

In This Topic
Detects, if the user is moving or editing the rectangle of area selection.

Please note that the rectangle of selection always relates to the document currently displayed in the GdViewer control. You can find out, if this rectangle is currently defined and drawn within the control, using the IsRect method.

The RectEditedByUser event is raised when the rectangle has been successfully edited.
Syntax
'Declaration
 

Public Function IsRectEditing() As Boolean
public bool IsRectEditing()
public function IsRectEditing(): Boolean; 
public function IsRectEditing() : boolean;
public: bool IsRectEditing(); 
public:
bool IsRectEditing();

Return Value

true if the user is moving or editing the rectangle of area selection, else false.
Remarks
Please note that it is recommended to call this method from the MouseDown or MouseMove events.

Be aware that you are allowed to define only one rectangle of selection within the GdViewer control. Likewise, this rectangle always relates to the currently displayed document.

Example
How to utilize the fact that a user is editing the rectangle of area selection. 
'We assume that the GdViewer1 control has been properly integrated
'and your document has been properly displayed as well.
Sub GdViewer1_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs)
    If GdViewer1.IsRectEditing() Then
        'Do your stuff here.
    End If
End Sub
//We assume that the GdViewer1 control has been properly integrated
//and your document has been properly displayed as well.
void GdViewer1_MouseMove(object sender, MouseEventArgs e)
{
    if (GdViewer1.IsRectEditing())
    {
        //Do your stuff here.
    }
}
See Also

Reference

GdViewer Class
GdViewer Members
RectEditedByUser Event
RectIsEditable Property
IsRect Method
IsRectDrawing Method
ClearRect Method
CenterOnRect Method