GetRegionName Method (GdViewer)

In This Topic

Gets the name of a highlighted region specified by its unique identifier related to the document currently displayed in the GdViewer control. These regions, if present, determines the currently defined highlighted regions on the displayed document.

You can define the name of each highlighted region when adding regions using AddRegion(String,Int32,Int32,Int32,Int32,ForegroundMixMode,Int32) or AddRegionInches(String,Single,Single,Single,Single,ForegroundMixMode,Int32) methods or directly using the SetRegionName method.

Syntax

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

'Declaration
 
Public Function GetRegionName( _
   ByVal RegionID As Integer _
) As String

public string GetRegionName( 
   int RegionID
)

public function GetRegionName( 
    RegionID: Integer
): String;

public function GetRegionName( 
   RegionID : int
) : String;

public: string* GetRegionName( 
   int RegionID
)

public:
String^ GetRegionName( 
   int RegionID
)

Parameters

RegionID: A unique region identifier of the specified region. You can obtain this identifier using the GetRegionID method or when creating regions using AddRegion(String,Int32,Int32,Int32,Int32,ForegroundMixMode,Int32) or AddRegionInches(String,Single,Single,Single,Single,ForegroundMixMode,Int32) methods.

Return Value

The name of the specified region. The GetStat method can be subsequently used to determine if this method has been successful.

Remarks

Be aware that if the required region does not exist, the method will fail.

Just to inform you, that the default region name set by the toolkit is "SearchRegion"+occurrence_number when defining regions by using SearchText(String,Int32,Boolean) methods.

Example

Both these examples ilustrate you how to find out a name of a defined highlighted region.

This example presents some region properties set by the toolkit.

VB.NET
C#

'We assume that the GdViewer1 control has been properly integrated.
If GdViewer1.DisplayFromFile("") = GdPictureStatus.OK Then
    Dim text_to_find As String = "GdPicture"
    GdViewer1.RemoveAllRegions()
    Dim text_found As Boolean = GdViewer1.SearchText(text_to_find, 0, True, True)
    If GdViewer1.GetStat() = GdPictureStatus.OK Then
        If text_found Then
            'Taking the first region to determine default values for some region properties set by the toolkit.
            Dim regID As Integer = GdViewer1.GetRegionID(1)
            If GdViewer1.GetStat() = GdPictureStatus.OK Then
                Dim message As String = "The number of highlighted regions: " + GdViewer1.RegionCount().ToString()
                message = message + vbCrLf + "name: " + GdViewer1.GetRegionName(regID).ToString()
                message = message + "  color: " + GdViewer1.GetRegionColor(regID).ToString()
                message = message + vbCrLf + "border width: " + GdViewer1.GetRegionBorderWidth(regID).ToString()
                message = message + "  border color: " + GdViewer1.GetRegionBorderColor(regID).ToString()
                message = message + "  color selection: " + GdViewer1.GetRegionColorSelection(regID).ToString()
                MessageBox.Show(message, "GdViewer.GetRegionColor")
            Else
                MessageBox.Show("The regionID has not been found. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName")
            End If
        Else
            MessageBox.Show("The given text has not been found.", "GdViewer.GetRegionName")
        End If
    Else
        MessageBox.Show("The search process has failed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName")
    End If
Else
    MessageBox.Show("The file can't be displayed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName")
End If

//We assume that the GdViewer1 control has been properly integrated.
if (GdViewer1.DisplayFromFile("") == GdPictureStatus.OK)
{
    string text_to_find = "GdPicture";
    GdViewer1.RemoveAllRegions();
    bool text_found = GdViewer1.SearchText(text_to_find, 0, true, true);
    if (GdViewer1.GetStat() == GdPictureStatus.OK)
    {
        if (text_found)
        {
            //Taking the first region to determine default values for some region properties set by the toolkit.
            int regID = GdViewer1.GetRegionID(1);
            if (GdViewer1.GetStat() == GdPictureStatus.OK)
            {
                string message = "The number of highlighted regions: " + GdViewer1.RegionCount().ToString();
                message = message + "\nname: " + GdViewer1.GetRegionName(regID).ToString();
                message = message + "  color: " + GdViewer1.GetRegionColor(regID).ToString();
                message = message + "\nborder width: " + GdViewer1.GetRegionBorderWidth(regID).ToString();
                message = message + "  border color: " + GdViewer1.GetRegionBorderColor(regID).ToString();
                message = message + "  color selection: " + GdViewer1.GetRegionColorSelection(regID).ToString();
                MessageBox.Show(message, "GdViewer.GetRegionColor");
            }
            else
            {
                MessageBox.Show("The regionID has not been found. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName");
            }
        }
        else
            MessageBox.Show("The given text has not been found.", "GdViewer.GetRegionName");
    }
    else
        MessageBox.Show("The search process has failed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName");
}
else
    MessageBox.Show("The file can't be displayed. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName");

This example shows you how to find out the name of the highlighted region.

VB.NET
C#

'We assume that the GdViewer1 control has been properly integrated and your document has been properly displayed as well.
            
'To successfully follow this example, please use the code snippet attached to AddRegion or AddRegionInches methods
'to define highlighted regions or define some highlighted regions using SearchText methods by yourself.
Dim regID As Integer = 0, regCount As Integer = GdViewer1.RegionCount()
If regCount > 0 Then
    Dim message As String = "The number of regions: " + regCount.ToString()
    For j As Integer = 1 To regCount
        regID = GdViewer1.GetRegionID(j)
        message = message + vbCrLf + "regID: " + regID.ToString() + "  prev.name: " + GdViewer1.GetRegionName(regID) + "  current name: "
        GdViewer1.SetRegionName(regID, "Region" + regID.ToString())
        message += GdViewer1.GetRegionName(regID)
    Next
    MessageBox.Show(message, "GdViewer.GetRegionName")
Else
    MessageBox.Show("No highlighted region found related to this document. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName")
End If

//We assume that the GdViewer1 control has been properly integrated and your document has been properly displayed as well.
            
//To successfully follow this example, please use the code snippet attached to AddRegion or AddRegionInches methods
//to define highlighted regions or define some highlighted regions using SearchText methods by yourself.
int regID = 0, regCount = GdViewer1.RegionCount();
if (regCount > 0)
{
    string message = "The number of regions: " + regCount.ToString();
    for (int j = 1; j <= regCount; j++)
    {
        regID = GdViewer1.GetRegionID(j);
        message = message + "\nregID: " + regID.ToString() + "  prev.name: " + GdViewer1.GetRegionName(regID) + "  current name: ";
        GdViewer1.SetRegionName(regID, "Region" + regID.ToString());
        message += GdViewer1.GetRegionName(regID);
    }
    MessageBox.Show(message, "GdViewer.GetRegionName");
}
else
    MessageBox.Show("No highlighted region found related to this document. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.GetRegionName");

Reference

GdViewer Class
GdViewer Members
SetRegionName Method
RegionCount Method
GetRegionID Method
RemoveAllRegions Method
SearchText(String,Int32,Boolean) Method
AddRegion(String,Int32,Int32,Int32,Int32,ForegroundMixMode,Int32) Method
AddRegionInches(String,Single,Single,Single,Single,ForegroundMixMode,Int32) Method