Arrow size

[Andrea]

Hello, is there a way to change the arrow size of a radpopupeditor ?

I tried the following, that changes the dropdown button size but I cannot find a way to edit the arrow size, the problem is that (on windows 10, 4k monitor, 200dpi screen) the arrow is almost invisible.

radPopupEditor1.PopupEditorElement.ArrowButtonElement.Size = getSizeByUnit(4.5F,6.35F); <--this works


radPopupEditor1.PopupEditorElement.ArrowButtonElement.Arrow.Size = getSizeByUnit(2, 2); <--no effect.


Best regards

Andrea

[Dess | Tech Support Engineer, Principal]

Hello Andrea,

Thank you for writing.

Note that RadDropDownList uses an arrow image. In order to increase the arrow size, you can hide the image and display the arrow primitive. Please refer to the following code snippet:

this.radDropDownList1.DropDownListElement.ArrowButton.Arrow.Visibility = Telerik.WinControls.ElementVisibility.Visible;
ImagePrimitive imagePrimitive = this.radDropDownList1.DropDownListElement.ArrowButton.FindDescendant<ImagePrimitive>();
if (imagePrimitive != null)
{
    imagePrimitive.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
}
this.radDropDownList1.DropDownListElement.ArrowButton.Arrow.Size = new Size(14, 10);

I hope this information helps. Should you have further questions I would be glad to help.

 

Regards,
Dess
Telerik

[Andrea]

Hi Dess, thank you very much, that is working:

 

float dpiX;
float pixelPerUnit;

int getPixelByUnit(float units)
{
    return (int)(units * pixelPerUnit + 0.5);
}
Size getSizeByUnit(float xunits, float yunits)
{
    return new Size((int)(xunits * pixelPerUnit + 0.5), (int)(yunits * pixelPerUnit + 0.5));
}

private void ScaleToCurrentDPI()
{
    using (Graphics graphics = this.CreateGraphics())
    {
        dpiX = graphics.DpiX;
    }
    pixelPerUnit = dpiX / 25.4F;//millimeters unit

    radPopupEditor1.Font = Font;
    radPopupEditor1.PopupEditorElement.ArrowButtonElement.AutoSize = false;
    radPopupEditor1.PopupEditorElement.ArrowButtonElement.Size = getSizeByUnit(4.5F,6.35F);
    radPopupEditor1.PopupEditorElement.ArrowButtonElement.Arrow.Visibility = Telerik.WinControls.ElementVisibility.Visible;
    ImagePrimitive imagePrimitive = radPopupEditor1.PopupEditorElement.ArrowButtonElement.FindDescendant<ImagePrimitive>();
    if (imagePrimitive != null)
    {
        imagePrimitive.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
    }
    radPopupEditor1.PopupEditorElement.ArrowButtonElement.Arrow.Size = getSizeByUnit(2.117F, 1.058F);
}

Thank you very much for your help.

Andrea