[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

Null Value In DateTmePicker

Posted on 2001-08-03
6
Medium Priority
?
193 Views
Last Modified: 2010-04-06
Hey all,

How do I display no values in the DateTimePicker when the user hasn't entered/selected a date?

When I bring up a new entry screen, all the DateTimePicker dates show the date the component was placed on the form. I don't want it to show anything unless data has been entered.

Thanks,
Chad
0
Comment
Question by:dhertzfe
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 22

Expert Comment

by:Mohammed Nasman
ID: 6351302
Hello

  I think you need to override the a method, maybe CheckEmptyDate, but i'm not sure

0
 

Author Comment

by:dhertzfe
ID: 6352280
Hi mnasman,

There is no method like that for TDateTimePicker.


Chad
0
 
LVL 22

Expert Comment

by:Mohammed Nasman
ID: 6352716
it's protected method for the TDateTimePicker
Prss Control while u move the move above TDateTimePicker, so when u see it in blue color, click on it, and u will see the source of that control, here's some source of the ComCtrls.pas, that contain all the declartion of TDateTimePicker class

 TDateTimePicker = class(TCommonCalendar)
  private
    FCalAlignment: TDTCalAlignment;
    FChanging: Boolean;
    FChecked: Boolean;
..
..
  protected
    procedure CheckEmptyDate; override;
    procedure CreateParams(var Params: TCreateParams); override;
    procedure CreateWnd; override;
    procedure Change; dynamic;
..

Best regards
Mohammed
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:dhertzfe
ID: 6353232
Hi Mohammed,

I'm using Delphi 6....and I did what you said in the designer on my form with the TDateTimePicker and I didn't see what you where talking about.

How would I write the code to override CheckEmptyDate method to not display the date unless there was a value entered by the user or read from a record?

Thanks,
Chad
0
 
LVL 26

Expert Comment

by:Russell Libby
ID: 8735385
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

To be PAQ/Refund

Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Thank you,
Russell

EE Cleanup Volunteer
0
 

Accepted Solution

by:
PashaMod earned 0 total points
ID: 8822594
Per recommendation,

PashaMod
Community Support Moderator @Experts Exchange
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
Suggested Courses

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question