This behavior can be observed in the Office2010 theme. In the following image, the button's width in RadCalculatorDropDown and RadSpinEditor is less by 1 px compared to the buttons in the other editor controls.
Hello Li Yang,
Thank you for reporting this.
As a workaround, you can manually adjust the width of the controls by setting the MinSize property.
public Form1()
{
InitializeComponent();
this.radCalculatorDropDown1.CalculatorElement.ArrowButton.MinSize = new System.Drawing.Size(17, 20);
this.radSpinEditor1.SpinElement.ButtonUp.MinSize = new System.Drawing.Size(17, 0);
this.radSpinEditor1.SpinElement.ButtonDown.MinSize = new System.Drawing.Size(17, 0);
}
Regards,
Dinko | Tech Support Engineer
Progress Telerik
Love the Telerik and Kendo UI products and believe more people should try them? Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher.