Extracting BMP from file

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Square and cube roots
The =SQRT(25) is a square root. For a cube root, use =125^(1/3). For a fourth root, use =625^(1/4).
something like this
Code:
[COLOR=#000000][FONT=verdana]Function thumbCDR(file$) As StdPicture
   Dim tmp$, hF&, s$, base&, wd As Byte, ht As Byte, bpp%, thLen&, ofs&, thumb As String * 30000, b4&, th1&
   On Error Resume Next
   
   hF = FreeFile()
   Open file For Binary Access Read Shared As [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] : If Err.Number Then Exit Function
   Get [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , thumb
   base = InStr(1, thumb, "DISP")
   If base <= 0 Or base > 15000 Then Exit Function
   Get [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , base + 16, wd
   Get [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , base + 20, ht
   Get [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , base + 26, bpp
   Get [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , base + 32, thLen
   Close
   ofs = &H36 + Switch(bpp = 1, 2 * 4, bpp = 4, 16 * 4, True, 256 * 4)
   th1=&H436 + CLng(ht) * CLng(wd):if th1>30000 then th1=30000
   thLen = iif(thLen + ofs<th1,thLen + ofs, th1)
   
   tmp = Environ("temp") + "thumb" + Hex$(Timer) + ".bmp"
   Open tmp For Binary Access Write Lock Read Write As [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] : If Err.Number Then Exit Function
   s = "BM": Put [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , s      ' 2 bytes
   Put [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , thLen            ' 4 bytes
   Put [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , b4               ' 4 bytes zero
   Put [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , ofs              ' 4 bytes
   Put [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=hF]#hF[/URL] , , Mid$(thumb, base + 12, thLen - 14)
   Close
   Set thumbCDR = LoadPicture(tmp)
   Kill tmp
   End Function[/FONT][/COLOR]
then assigning it to VBA form image object:
Code:
Code:
set Image1.picture=thumbCDR("c:\work\myDesign.cdr")[/FONT][/COLOR]
 
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