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[Cheatmasterbw]

hi, i am working on an image editor, like MSPaint. whenever i minimize the screen and re-open it, the drawn image completely vanishes. is there any way to prevent this? thanks!

P.S.

the program was made in vb 2008

-and-

I have uploaded the source!
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[mandai]

Its because you aren't actually drawing to the image in the picturebox, just on the picturebox itself.
With any control on a form if you draw over it and then it refreshes later, your changes will be lost (unless you recreate them after the refresh has occured).

You might be looking to make a graphics object from an image that you load into the picturebox, then you can draw using that and refresh your picturebox and your drawing will be preserved.

[Cheatmasterbw]

could you post an example?

[mandai]

Code: Select all

Dim gfx As Graphics

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim bmp As Bitmap = New Bitmap(PictureBox1.Width, PictureBox1.Height)
        PictureBox1.Image = bmp
        gfx = Graphics.FromImage(picturebox1.Image)
End Sub

Private Sub PictureBox1_MouseMove(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
        gfx.FillRectangle(Brushes.Black, New Rectangle(e.X, e.Y, 10, 10))
        PictureBox1.Refresh()
End Sub