ResizePage Method (GdPicturePDF)
In This Topic
Resizes the currently selected page in the loaded PDF document according to the newly specified page width and page height.
Syntax
Parameters
- NewPageWidth
- The new required page width expressed in the current units specified by the SetMeasurementUnit method.
You can simply use the GetMeasurementUnit method to determine the currently defined units and you can easily use the SetMeasurementUnit method to reset the units according to your preference.
- NewPageHeight
- The new required page height expressed in the current units specified by the SetMeasurementUnit method.
You can simply use the GetMeasurementUnit method to determine the currently defined units and you can easily use the SetMeasurementUnit method to reset the units according to your preference.
Return Value
A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.
We strongly recommend always checking this status first.
Example
How to resize the first page in the PDF document.
Dim caption As String = "Example: ResizePage"
Dim gdpicturePDF As New GdPicturePDF()
If gdpicturePDF.LoadFromFile("testPDF.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetPageCount()
Dim status As GdPictureStatus = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
If count > 0 Then
status = gdpicturePDF.SelectPage(1)
If status = GdPictureStatus.OK Then
Dim height As Single = gdpicturePDF.GetPageHeight()
status = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
Dim width As Single = gdpicturePDF.GetPageWidth()
status = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
status = gdpicturePDF.ResizePage(width / 2, height / 2)
If status = GdPictureStatus.OK Then
If gdpicturePDF.SaveToFile("test_ResizePage.pdf") = GdPictureStatus.OK Then
MessageBox.Show("The page has been resized successfully and the file has been saved.", caption)
Else
MessageBox.Show("The page has been resized successfully, but the file can't be saved.", caption)
End If
Else
MessageBox.Show("The ResizePage() method has failed with the status: " + status.ToString(), caption)
status = GdPictureStatus.OK
End If
End If
End If
End If
Else
status = GdPictureStatus.InvalidParameter
End If
End If
If status <> GdPictureStatus.OK Then
MessageBox.Show("The example HAS NOT been followed successfully. The last error status is: " + status.ToString(), caption)
End If
Else
MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()
string caption = "Example: ResizePage";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("testPDF.pdf", false) == GdPictureStatus.OK)
{
int count = gdpicturePDF.GetPageCount();
GdPictureStatus status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
if (count > 0)
{
status = gdpicturePDF.SelectPage(1);
if (status == GdPictureStatus.OK)
{
float height = gdpicturePDF.GetPageHeight();
status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
float width = gdpicturePDF.GetPageWidth();
status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
status = gdpicturePDF.ResizePage(width/2, height/2);
if (status == GdPictureStatus.OK)
{
if (gdpicturePDF.SaveToFile("test_ResizePage.pdf") == GdPictureStatus.OK)
MessageBox.Show("The page has been resized successfully and the file has been saved.", caption);
else
MessageBox.Show("The page has been resized successfully, but the file can't be saved.", caption);
}
else
{
MessageBox.Show("The ResizePage() method has failed with the status: " + status.ToString(), caption);
status = GdPictureStatus.OK;
}
}
}
}
}
else
status = GdPictureStatus.InvalidParameter;
}
if (status != GdPictureStatus.OK)
MessageBox.Show("The example HAS NOT been followed successfully. The last error status is: " + status.ToString(), caption);
}
else
MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();
Example
How to resize the first page in the PDF document.
Dim caption As String = "Example: ResizePage"
Dim gdpicturePDF As New GdPicturePDF()
If gdpicturePDF.LoadFromFile("testPDF.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetPageCount()
Dim status As GdPictureStatus = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
If count > 0 Then
status = gdpicturePDF.SelectPage(1)
If status = GdPictureStatus.OK Then
Dim height As Single = gdpicturePDF.GetPageHeight()
status = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
Dim width As Single = gdpicturePDF.GetPageWidth()
status = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
status = gdpicturePDF.ResizePage(width / 2, height / 2)
If status = GdPictureStatus.OK Then
If gdpicturePDF.SaveToFile("test_ResizePage.pdf") = GdPictureStatus.OK Then
MessageBox.Show("The page has been resized successfully and the file has been saved.", caption)
Else
MessageBox.Show("The page has been resized successfully, but the file can't be saved.", caption)
End If
Else
MessageBox.Show("The ResizePage() method has failed with the status: " + status.ToString(), caption)
status = GdPictureStatus.OK
End If
End If
End If
End If
Else
status = GdPictureStatus.InvalidParameter
End If
End If
If status <> GdPictureStatus.OK Then
MessageBox.Show("The example HAS NOT been followed successfully. The last error status is: " + status.ToString(), caption)
End If
Else
MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()
string caption = "Example: ResizePage";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("testPDF.pdf", false) == GdPictureStatus.OK)
{
int count = gdpicturePDF.GetPageCount();
GdPictureStatus status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
if (count > 0)
{
status = gdpicturePDF.SelectPage(1);
if (status == GdPictureStatus.OK)
{
float height = gdpicturePDF.GetPageHeight();
status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
float width = gdpicturePDF.GetPageWidth();
status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
status = gdpicturePDF.ResizePage(width/2, height/2);
if (status == GdPictureStatus.OK)
{
if (gdpicturePDF.SaveToFile("test_ResizePage.pdf") == GdPictureStatus.OK)
MessageBox.Show("The page has been resized successfully and the file has been saved.", caption);
else
MessageBox.Show("The page has been resized successfully, but the file can't be saved.", caption);
}
else
{
MessageBox.Show("The ResizePage() method has failed with the status: " + status.ToString(), caption);
status = GdPictureStatus.OK;
}
}
}
}
}
else
status = GdPictureStatus.InvalidParameter;
}
if (status != GdPictureStatus.OK)
MessageBox.Show("The example HAS NOT been followed successfully. The last error status is: " + status.ToString(), caption);
}
else
MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();
See Also