DropFile Event (GdViewer)

In This Topic

This event is raised when a file has been dropped in the current GdViewer control using the drag-and-drop feature. The event is explicitly raised when the AllowDropFile property is set to true.

Please check the corresponded GdViewer.DropFileEventHandler for given parameters.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Event DropFile As GdViewer.DropFileEventHandler

public event GdViewer.DropFileEventHandler DropFile

public event DropFile: GdViewer.DropFileEventHandler;

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event GdViewer.DropFileEventHandler* DropFile

public:
event GdViewer.DropFileEventHandler^ DropFile

Remarks

Please ensure that you have enabled the AllowDropFile property to benefit from using this event.

Example

How to add this event to your GdViewer control.

VB.NET
C#

'We assume that the GdViewer1 control has been properly integrated.
Friend WithEvents GdViewer1 As GdPicture14.GdViewer
            
'Allowing to drop files.
GdViewer1.AllowDropFile = True
            
'Add the event.
AddHandler GdViewer1.DropFile, AddressOf GdViewer1_DropFile
            
'Define the event.
Sub GdViewer1_DropFile(ByVal FilePath As String) Handles GdViewer1.DropFile
    If GdViewer1.DisplayFromFile(FilePath) <> GdPictureStatus.OK Then
        MessageBox.Show("The file can't be displayed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.DropFile")
End Sub

//We assume that the GdViewer1 control has been properly integrated.
            
//Allowing to drop files.
GdViewer1.AllowDropFile = true;
            
//Add the event.
GdViewer1.DropFile += GdViewer1_DropFile;
            
//Define the event.
void GdViewer1_DropFile(string FilePath)
{
    if (GdViewer1.DisplayFromFile(FilePath) != GdPictureStatus.OK)
        MessageBox.Show("The file can't be displayed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.DropFile");
}

Reference

GdViewer Class
GdViewer Members
GdViewer.DropFileEventHandler Delegate
AllowDropFile Property