Position of a PictureBox

[Grenoblus]

Hello, i want to center a picturebox but i dont understand the maths

For exemple, i set the form size to 400*200 and the picture size to 300*100, so the picture location should be 50*50, but its no centered (it s ok at location 40*30)
What is wrong in my maths ?

Thanks

[Grenoblus]

Attachment 196098

Voici l'image

[Shaggy Hiker]

If you add an image in Quick Reply, it doesn't show up. You'd have to Go Advanced.

However, your math doesn't seem so bad, so you probably need to look at a few other things first. Is the form really the size you are expecting it to be? Probably not. I think that DPI scaling may influence the actual size.

[dbasnett]

This looks correct,

Public Class Form1

    Private Sub Form1_ResizeEnd(sender As Object, e As EventArgs) Handles Me.ResizeEnd
        CenterPB1()
    End Sub

    Private Sub Form1_Shown(sender As Object, e As EventArgs) Handles Me.Shown
        CenterPB1()
    End Sub

    Private Sub CenterPB1()
        PictureBox1.Left = (Me.ClientSize.Width - PictureBox1.Width) \ 2
        PictureBox1.Top = (Me.ClientSize.Height - PictureBox1.Height) \ 2
        Label1.Text = String.Format("W:{0}  H:{1}", PictureBox1.Width, PictureBox1.Height)
        Label2.Text = String.Format("W:{0}  H:{1}", Me.ClientSize.Width, Me.ClientSize.Height)
    End Sub
End Class

[k_zeon]

try

PictureBox1.Left = (Me.ClientSize.Width/2) - (PictureBox1.Width/ 2)
PictureBox1.Top = (Me.ClientSize.Height/2)  - (PictureBox1.Height/ 2)

also dont forget that if on a laptop sometimes the scaling is 125% so need to take in to account that

[dbasnett]

try

PictureBox1.Left = (Me.ClientSize.Width/2) - (PictureBox1.Width/ 2)
PictureBox1.Top = (Me.ClientSize.Height/2)  - (PictureBox1.Height/ 2)

also dont forget that if on a laptop sometimes the scaling is 125% so need to take in to account that

Did you see Post #4?

[Grenoblus]

thanks for your answer but i think i found my problem :

me.size is the size of the external dimensions of the form and the (0,0) location for the picturebox is inside the form

[.paul.]

thanks for your answer but i think i found my problem :

me.size is the size of the external dimensions of the form and the (0,0) location for the picturebox is inside the form

You’re right. Size (or the Bounds rectangle) is not the same as ClientSize (or the ClientRectangle)