ToolTip show doesn't work in dialog for a pictureBox

Question

Hello,
I'm trying to set the tooltip with an autopopupdelay of 5000 and reshowdelay of 0 (for showing it permanently as long as the cursor is on the pictureBox).

• .Net 4

I can use the ToolTip.SetToolTip but when i use the show method nothing appears (https://learn.microsoft.com/de-de/dotnet/api/system.windows.forms.tooltip.show?view=net-5.0).

I've tried to set it in the constructor and in a MouseHover/ MouseEnter event.

_toolTip.Show("Beispiel Information", pbProcess, 5000);  

PS:

I can set the value also with ToolTip.SetToolTip as follows: https://learn.microsoft.com/de-de/dotnet/api/system.windows.forms.tooltip.showalways?view=net-5.0.

1. The tooltip doesn't appear. I have to use the only button in the dialog, after that when i hover over the pictureBox the tooltip appears. I tried "active = true" and "showAlways = true" but it doesn't help. I don't understand what blocks the tooltip before using the button.
2. The ReshowDelay doesn't show the tooltip permanently, is there a solution?

Regards

Answer 1

Ok,
I think there is no solution except setting a timer for reactivating the tooltip.

I found some answers here and on a few other pages:

https://ux.stackexchange.com/questions/3931/tooltips-with-infinite-timeout

Thank you.

Answer 2

This works for me with a PictureBox in a Dialog Box (in Form_Load) =>

(Tooltip displayed immediately and permanently)

ToolTip toolTip1 = new ToolTip();          
toolTip1.AutoPopDelay = 0;           
toolTip1.InitialDelay = 1;            
toolTip1.ReshowDelay = 0;           
toolTip1.ShowAlways = true;           
toolTip1.SetToolTip(this.pictureBox1, "Test Tooltip");