Syntax:
Property Get SizeX() As Long
Property Let SizeX(ByVal Value As Long)
Remarks:
The SizeX property returns or specifies the horizontal size of an exported bitmap. This property is measured in pixels. If neither SizeX nor SizeY is specified, the size of the bitmap is calculated based on the size of the objects being exported and the specified bitmap resolution.
Examples:
The following VBA example exports the current selection to a 100 × 100 pixel TIFF image.
Sub Test()
Dim opt As New StructExportOptions
Dim flt As ExportFilter
opt.SizeX = 100
opt.SizeY = 100
opt.ImageType = cdrCMYKColorImage
opt.Compression = cdrCompressionLZW
Set flt = ActiveDocument.ExportEx("C:\Temp\img.tif", cdrTIFF, cdrSelection, opt)
flt.Finish 
End Sub