Wie kann man öffnen, PNG (Bild) - Datei mit VB6 in ein RGB-array, oder R, G, B-arrays

Danke für den link, obwohl ich kein fließend VB guy (mehr C & ASM Aromen), wird der code sehr BMP-centric; nicht PNG.

Wenn das der Fall ist, ich habe zu glauben, die Sie vorgeschlagen, den link, da wäre es eine einfache Sache, um den code PNG ' ablé, aber ich würde nicht wissen, wie man Ansatz.

'1 form with :
'    1 picturebox : name=Picture1
'    1 commandbutton : name=Command1
Option Explicit

Private Type BITMAP
  bmType As Long
  bmWidth As Long
  bmHeight As Long
  bmWidthBytes As Long
  bmPlanes As Integer
  bmBitsPixel As Integer
  bmBits As Long
End Type

Private Declare Function GetObject Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, ByRef lpObject As Any) As Long
Private Declare Function GetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, ByRef lpBits As Any) As Long
Private Declare Function SetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, ByRef lpBits As Any) As Long

Private mbmpBits() As Byte
Private mudtBmp As BITMAP

Private Sub Command1_Click()
  ShowRed
'  ShowGreen
'  ShowBlue
End Sub

Private Sub Form_Load()
  Picture1.Picture = LoadPicture("c:\temp\pic.bmp")
End Sub

Private Sub Form_Unload(Cancel As Integer)
  Set Form1 = Nothing
End Sub

Private Sub ShowRed()
  Dim lngX As Long, lngY As Long
  ReadBits
  For lngX = 0 To mudtBmp.bmWidth - 1
    For lngY = 0 To mudtBmp.bmHeight - 1
      mbmpBits(0, lngX, lngY) = 0
      mbmpBits(1, lngX, lngY) = 0
    Next lngY
  Next lngX
  ShowBits
End Sub

Private Sub ShowGreen()
  Dim lngX As Long, lngY As Long
  ReadBits
  For lngX = 0 To mudtBmp.bmWidth - 1
    For lngY = 0 To mudtBmp.bmHeight - 1
      mbmpBits(0, lngX, lngY) = 0
      mbmpBits(2, lngX, lngY) = 0
    Next lngY
  Next lngX
  ShowBits
End Sub

Private Sub ShowBlue()
  Dim lngX As Long, lngY As Long
  ReadBits
  For lngX = 0 To mudtBmp.bmWidth - 1
    For lngY = 0 To mudtBmp.bmHeight - 1
      mbmpBits(1, lngX, lngY) = 0
      mbmpBits(2, lngX, lngY) = 0
    Next lngY
  Next lngX
  ShowBits
End Sub

Private Sub ReadBits()
  GetObject Picture1.Picture.Handle, Len(mudtBmp), mudtBmp
  With mudtBmp
    ReDim mbmpBits(0 To (.bmBitsPixel \ 8) - 1, 0 To .bmWidth - 1, 0 To .bmHeight - 1) As Byte
    GetBitmapBits Picture1.Picture.Handle, .bmWidthBytes * .bmHeight, mbmpBits(0, 0, 0)
  End With 'mudtBmp
End Sub

Private Sub ShowBits()
  SetBitmapBits Picture1.Picture.Handle, mudtBmp.bmWidthBytes * mudtBmp.bmHeight, mbmpBits(0, 0, 0)
  Erase mbmpBits
  Picture1.Refresh
End Sub