TAdvDateTimePicker supports natively. You can set ShowCheckBox = True , and the user can uncheck the box to indicate an empty value. Programmatically, you can set Date to Null or Empty . This is a lifesaver for database applications where date fields allow NULLs. 2. Customization That Doesn't Fight You Want a dark theme? Need a specific border style? Tired of the dropdown calendar looking like it belongs on Windows XP?

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In this post, I’ll walk through why upgrading to TAdvDateTimePicker is a no-brainer for modern VCL applications. One of the biggest headaches with the standard picker is the inability to represent "no date" or "empty." You usually have to use a separate checkbox to disable the control.

Enter (from TMS Software). This component takes everything you wish the standard picker could do and wraps it into a professional, feature-rich control.

TAdvDateTimePicker includes a powerful EditMask property. You can define exact input patterns, and the control validates as the user types. This prevents garbage data before your OnExit event even fires. Here is how simple it is to set up a modern, nullable, visually styled date picker in Delphi:

It is available as part of the . If you haven't looked at TMS components lately, their modern styling and Windows 10/11 compatibility alone are worth the upgrade.

Mastering Date & Time Inputs: Why TAdvDateTimePicker is the Modern Developer’s Choice

procedure TForm1.FormCreate(Sender: TObject); begin // Configure TAdvDateTimePicker AdvDateTimePicker1.ShowCheckBox := True; // Allow empty/NULL values AdvDateTimePicker1.Checked := False; // Start empty AdvDateTimePicker1.Flat := True; // Modern flat look AdvDateTimePicker1.FlatBorderColor := clGray; AdvDateTimePicker1.Color := clWhite; // Calendar customization AdvDateTimePicker1.CalColors.Background := clWindow; AdvDateTimePicker1.CalColors.TitleBack := clNavy; AdvDateTimePicker1.CalColors.TitleText := clWhite;

// Week numbers and format AdvDateTimePicker1.ShowWeekNumbers := True; AdvDateTimePicker1.DateFormat := 'dd MMM yyyy'; // e.g., "25 Dec 2025" end; If you are shipping a professional Delphi application, the standard TDateTimePicker immediately dates your software (pun intended). TAdvDateTimePicker is not just a "nice to have"—it solves real-world problems like NULL database fields, custom theming, and intuitive time selection.

Share your pain points (or workarounds) in the comments below! Disclaimer: This post is for informational purposes. TMS Software is a third-party vendor. Always refer to their official documentation for the latest updates.

If you have been developing Delphi applications for any length of time, you are likely familiar with the standard TDateTimePicker . It gets the job done, but let’s be honest—it feels stuck in the Windows 98 era. It is rigid, difficult to customize, and often requires workarounds for simple UI requirements.

TAdvDateTimePicker provides a behavior (like a spin edit but for time). Users can click the up/down buttons to increment hours/minutes/seconds, or you can use the TimePicker dropdown, which provides a visual clock-like interface for selecting time. This drastically improves UX for scheduling apps. 4. Week Numbers & Custom Formats For business applications, knowing "which week of the year" a date falls into is critical. The standard picker ignores this.