I'm developing an application in C# (Windows Forms), which uses Mono to run on Mac OS X. It contains some dynamic controls, for example a custom groupbox which contains some labels and textboxes, a button, etc.These boxes can both be added and removed dynamically.
My CustomGrpBx inherits from GroupBox and this is the contructor I use:
public CustomGrpBx(Point CreateHere,Info Inf)
{
this.Name = Inf.Name;
this.Location = CreateHere;
CreateHere.Y = 10;
CreateHere.X = 10;
CreateHere.Y += 7;
Button btnPress = new Button();
btnPress.Location = CreateHere;
btnPress.Size = new Size(40, 24);
btnPress.Text = Name;
btnPress.Enabled = false;
this.Controls.Add(btnPress);
CreateHere.X += 45;
CreateHere.Y += 2;
TextBox txtName = new TextBox();
txtName.Location = CreateHere;
txtName.Size = new Size(75, 20);
txtName.Text = Name;
txtName.ReadOnly = true;
this.Controls.Add(txtName);
CreateHere.X += 80;
//More code here, but the same pattern as above
this.Size = new Size(CreateHere.X + 30, CreateHere.Y + 35);
}
The problem arises both when they are created, and removed, or even when a messagebox is shown. What happens is that sometimes on rendering white boxes appears, or some labels are not drawn correctly. And sometimes when a messagebox appears, it first opens up like 5 dummies which are just blank, and which you can't close.
Am I doing something wrong, should I sleep the GUI thread a bit after each creation, or should I invalidate stuff on my own? Or should I try GTK#?
Many thanks on input on this.