Decrease space between controls in FlowLayoutPanel

Question

How can I decrease the space between the controls even further? I've set all the margins and padding to 0 but there is still space between my controlers.

this is the space I am getting with all margins and padding set to 0. I even set the margin and padding on each controller to 0.

and for the sake of consistency here is the code that is adding the PictureBoxes

Dim newPic As PictureBox = New PictureBox()
newPic.Image = p.Image
newPic.Size = New System.Drawing.Size(New Point(p.Size.Width * 2, 
                                                p.Size.Height * 2))
newPic.SizeMode = p.SizeMode
laytt.SetToolTip(newPic, ttstring)
AddHandler newPic.Click, AddressOf LayoutComponent_Clicked 

LayoutFlowLayout.Controls.Add(newPic)

Answer 1

You are not setting the Margin property on the picture boxes you add. The default is 3,3,3,3. Add this line of code to fix the problem:

  newPic.Margin = New Padding(0)

Answer 2

Every control handles margins differently, even with standard controls. Have a look at this example:

Notice that a Button reserves some space around it, while a TextBox takes everything. You may ask why 2 pixels in between them which you can clearly see. For that - please copy/paste into Paint and zoom in. Those 2 pixels are in fact the border, this is how a control is drawn. I am sure Buttons also have a border, but it's harder to justify visually, even when zoomed in.

If you want to change that, you would need to create a custom control and override how it's drawn, i.e. manually cut borders from it or similar. But I would not recommend doing it, to keep UI consistent.