PictureBox（面板上）上的C＃标签（透明backGround）

Question

I want to draw the Labels on PictureBoxes but should be transparent background . This is my code : `

                           Labels[i].Location = new Point(0, 0);
                            Labels[i].Size = new Size(13, 13);
                            Labels[i].BackColor = Color.Transparent;
                            Labels[i].ForeColor = Color.Blue;


  Invoke(new MethodInvoker(delegate { Panels.Controls.Add(Pictures[i]); }));
                                    Invoke(new MethodInvoker(delegate { Panels.Controls.Add(Labels[i]); }));

I'am drawing my Pictures fine, Labels too ... But I get the Labels under the Pictures (I can see each label when I drag the Picture out of his place) so I want to know , how I can put them in Front with Transparent BackGround . thank you `

Answer 1

我认为您应该使用像z-index这样的东西

Answer 2

Try calling Panels.Controls[Labels[i].Name].BringToFront(); in your delegate. This should bring each label in front of the pictures since they've already been added to the panel at that point.

Answer 3

I suppose you've already googled for this but here's a good link about winforms transparency .

I used to write many winforms applications that used very ugly skins with transparent labels. As I can remember there was some glitches when used jpg as a background picture and if picture loaded after the label has been drawn.

Anyway, I suggest overriding onPaint and onDraw methods as you can see in the link.

Answer 4

Transparency is only with respect to the container. For this to work you have to add the Label to the PictureBox . Change Panels to the name of the PictureBox you are working with in the Controls.Add() line.