getting and changing pixel colors

is there any way to check in a picbox if a pixel is painted over more than once and then change the color?
:confused:

Use can use GetPixel and SetPixel API's to read and draw pixels.

Code:

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Private Declare Function GetPixel Lib "gdi32" Alias "GetPixel" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long) As Long
Private Declare Function SetPixel Lib "gdi32" Alias "SetPixel" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal crColor As Long) As Long

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Usage

Code:

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'Get a Pixel
lColour = GetPixel(Picture1.hDC, 5, 5)

'Draw a Pixel
SetPixel(Picture1.hDC, 5, 5)

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how do i check if a pixel has been painted over more than once?

You would have to have a timer constantly monitoring it. for example sake, let's assume the Pixel should normally be coloured blue.

Code:

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Private Sub Timer1_Timer()
    lColour = GetPixel(Picture1.hDC, 5, 5)
    If lColour <> vbBlue Then  '<--the colour has changed
End Sub

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No one knows how to check if a pixel has been painted over more than once?

Silvertine, the code that Megatron gave you is the best you can have for this. There's no better way. Sorry.