VB6的片段
Sub TestTextSelection()
Dim miTextSel As MODI.IMiSelectableItem
Dim miSelectRects As MODI.miSelectRects
Dim miSelectRect As MODI.miSelectRect
Dim strTextSelInfo As String
Set miTextSel = MiDocView1.TextSelection
Set miSelectRects = miTextSel.GetSelectRects
strTextSelInfo = _
"Bounding rectangle page & coordinates: " & vbCrLf
For Each miSelectRect In miSelectRects
With miSelectRect
strTextSelInfo = strTextSelInfo & _
.PageNumber & ", " & .Top & ", " & _
.Left & ", " & .Bottom & ", " & _
.Right & vbCrLf
End With
Next
MsgBox strTextSelInfo, vbInformation + vbOKOnly, _
"Text Selection Info"
Set miSelectRect = Nothing
Set miSelectRects = Nothing
Set miTextSel = Nothing
End Sub
雖然這個問題被標記爲vb6，但答案是從vb.Net 2010。我希望vb.NET可以很容易地轉換爲vb6，只是問題只是幾個時間。
的基本思想是創建圖像的XML文件，然後運行在XML文件的查詢，以獲取所需的塊由（x1,y1）包圍和（x2,y2）的文本。
The core class
Imports System
Imports System.IO
Imports System.Xml
Imports System.Linq
Imports MODI
Public Class clsCore
Public Sub New()
'blah blah blah
End Sub
Public Function GetTextFromCoordinates(ByVal iPath$, ByVal x1&, ByVal y1&, ByVal x2&, ByVal y2&) As String
Try
Dim xDoc As XElement = Me.ConvertImage2XML(iPath)
If IsNothing(xDoc) = False Then
Dim result As New XElement(<text/>)
Dim query = xDoc...<wd>.Where(Function(c) Val(CStr([email protected])) >= x1 And Val(CStr([email protected])) <= x2 And Val(CStr([email protected])) >= y1 And Val(CStr([email protected])) <= y2)
For Each ele As XElement In query
result.Add(CStr(ele.Value) & " ")
Next ele
Return Trim(result.Value)
Else
Return ""
End If
Catch ex As Exception
Console.WriteLine(ex.ToString)
Return ex.ToString
End Try
End Function
Private Function ConvertImage2XML(ByVal iPath$) As XElement
Try
If File.Exists(iPath) = True Then
Dim miDoc As New MODI.Document
Dim result As New XElement(<image path=<%= iPath %>/>)
miDoc.Create(iPath)
For Each miImg As MODI.Image In miDoc.Images
Dim page As New XElement(<page id=<%= result...<page>.Count + 1 %>/>)
miImg.OCR()
For Each miWord As MODI.Word In miImg.Layout.Words
Dim wd As New XElement(<wd block=<%= miWord.RegionId.ToString %>><%= miWord.Text %></wd>)
For Each miRect As MODI.MiRect In miWord.Rects
wd.Add(New XAttribute("left", miRect.Left))
wd.Add(New XAttribute("top", miRect.Top))
wd.Add(New XAttribute("right", miRect.Right))
wd.Add(New XAttribute("bottom", miRect.Bottom))
Next miRect
page.Add(wd)
Next miWord
result.Add(page)
Next miImg
Return result
Else
Return Nothing
End If
Catch ex As Exception
Console.WriteLine(ex.ToString)
Return Nothing
End Try
End Function
End Class
的main module
Imports System
Imports System.IO
Imports System.Text.RegularExpressions
Module modMain
Sub Main()
Dim iPath$ = "", iPos$ = "150,825,1400,1200"
Console.WriteLine("Enter path to file:")
iPath = Console.ReadLine()
Console.WriteLine("")
Console.WriteLine("Enter co-ordinates(i.e., x1,y1,x2,y2 or 150,825,1400,1200):")
iPos = Console.ReadLine()
Dim tmp As String() = Regex.Split(iPos, "\D+")
Dim outText$ = New clsCore().GetTextFromCoordinates(iPath, tmp(0), tmp(1), tmp(2), tmp(3))
Console.WriteLine("")
Console.WriteLine(String.Format("{0}[({1},{2})-({3},{4})]:{5}{5}{6}", Dir(iPath), tmp(0), tmp(1), tmp(2), tmp(3), vbCrLf, outText))
Console.ReadLine()
End Sub
End Module
UPDATE
以下示例報告查看器控件中圍繞用戶圖像選擇的邊界矩形的頁碼和座標。並且可以在以後在picturebox中使用。
Sub TestImageSelection()
Dim miImageSel As MODI.IMiSelectableImage
Dim lngPageNo As Long
Dim lngLeft As Long, lngTop As Long
Dim lngRight As Long, lngBottom As Long
Dim strImageSelInfo As String
Set miImageSel = MiDocView1.ImageSelection
miImageSel.GetBoundingRect lngPageNo, _
lngLeft, lngTop, lngRight, lngBottom
strImageSelInfo = _
"Page number: " & lngPageNo & vbCrLf & _
"Bounding rectangle coordinates: " & vbCrLf & _
lngLeft & ", " & lngTop & ", " & _
lngRight & ", " & lngBottom
MsgBox strImageSelInfo, vbInformation + vbOKOnly, _
"Image Selection Info"
Set miImageSel = Nothing
End Sub
希望這有助於。
這是一個很好的伎倆，但正如我所說的「絕招」。我想在PictureBox的實際得到的圖片保存爲另一種PIC的確切點。比它上的OCR ..但是這也有幫助。我期待一些其他的答案，因爲這個原因+1，但很可能你的答案是接受的答案。 –
''Picturebox''也可能是一個解決方案。查看我的更新。 – Cylian