Hello.
I have a problem with the size of DropDown on high DPI. Long story short - it completely ignore DefaultItemsCountInDropDown and MaxDropDownItems.
And it works fine on 100% DPI. But when I change DPI settings in the system the pop-up height is greater than it should be and have empty space if DDL has less then 6 items. And It will show scrollbar if it has more then 6 items.
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.UI;
namespace PP.DesignExamples.BugsForTelerik
{
public class Form4 : RadForm
{
private RadDropDownList radDropDownList1;
private RadDropDownList radDropDownList2;
public Form4()
{
InitializeComponent();
}
private void InitializeComponent()
{
RadListDataItem radListDataItem1 = new RadListDataItem();
RadListDataItem radListDataItem2 = new RadListDataItem();
RadListDataItem radListDataItem3 = new RadListDataItem();
RadListDataItem radListDataItem4 = new RadListDataItem();
RadListDataItem radListDataItem5 = new RadListDataItem();
RadListDataItem radListDataItem6 = new RadListDataItem();
RadListDataItem radListDataItem7 = new RadListDataItem();
RadListDataItem radListDataItem8 = new RadListDataItem();
RadListDataItem radListDataItem9 = new RadListDataItem();
RadListDataItem radListDataItem10 = new RadListDataItem();
RadListDataItem radListDataItem11 = new RadListDataItem();
RadListDataItem radListDataItem12 = new RadListDataItem();
RadListDataItem radListDataItem13 = new RadListDataItem();
radDropDownList1 = new RadDropDownList();
radDropDownList2 = new RadDropDownList();
((ISupportInitialize)(radDropDownList1)).BeginInit();
((ISupportInitialize)(radDropDownList2)).BeginInit();
((ISupportInitialize)(this)).BeginInit();
SuspendLayout();
//
// radDropDownList1
//
radDropDownList1.DefaultItemsCountInDropDown = 10;
radDropDownList1.DropDownStyle = RadDropDownStyle.DropDownList;
radListDataItem1.Text = "ListItem 1";
radListDataItem2.Text = "ListItem 2";
radListDataItem3.Text = "ListItem 3";
radListDataItem4.Text = "ListItem 4";
radListDataItem5.Text = "ListItem 5";
radListDataItem6.Text = "ListItem 6";
radListDataItem7.Text = "ListItem 7";
radListDataItem8.Text = "ListItem 8";
radListDataItem9.Text = "ListItem 9";
radListDataItem10.Text = "ListItem 10";
radDropDownList1.Items.Add(radListDataItem1);
radDropDownList1.Items.Add(radListDataItem2);
radDropDownList1.Items.Add(radListDataItem3);
radDropDownList1.Items.Add(radListDataItem4);
radDropDownList1.Items.Add(radListDataItem5);
radDropDownList1.Items.Add(radListDataItem6);
radDropDownList1.Items.Add(radListDataItem7);
radDropDownList1.Items.Add(radListDataItem8);
radDropDownList1.Items.Add(radListDataItem9);
radDropDownList1.Items.Add(radListDataItem10);
radDropDownList1.Location = new Point(12, 12);
radDropDownList1.MaxDropDownItems = 10;
radDropDownList1.Name = "radDropDownList1";
radDropDownList1.Size = new Size(159, 20);
radDropDownList1.TabIndex = 0;
//
// radDropDownList2
//
radDropDownList2.DefaultItemsCountInDropDown = 3;
radDropDownList2.DropDownStyle = RadDropDownStyle.DropDownList;
radListDataItem11.Text = "ListItem 1";
radListDataItem12.Text = "ListItem 2";
radListDataItem13.Text = "ListItem 3";
radDropDownList2.Items.Add(radListDataItem11);
radDropDownList2.Items.Add(radListDataItem12);
radDropDownList2.Items.Add(radListDataItem13);
radDropDownList2.Location = new Point(12, 42);
radDropDownList2.MaxDropDownItems = 3;
radDropDownList2.Name = "radDropDownList2";
radDropDownList2.Size = new Size(159, 20);
radDropDownList2.TabIndex = 0;
//
// Form4
//
AutoScaleDimensions = new SizeF(6F, 13F);
AutoScaleMode = AutoScaleMode.Font;
ClientSize = new Size(487, 77);
Controls.Add(radDropDownList1);
Controls.Add(radDropDownList2);
Name = "Form4";
//
//
//
RootElement.ApplyShapeToControl = true;
Text = "Form4";
((ISupportInitialize)(radDropDownList1)).EndInit();
((ISupportInitialize)(radDropDownList2)).EndInit();
((ISupportInitialize)(this)).EndInit();
ResumeLayout(false);
PerformLayout();
}
}
}