About Delphi Programming

ORM - Object Relational Mapping / Persistence Frameworks for Delphi

2010-02-09T03:47:01Z

in Delphi Tools / Components :: Working with database data in Delphi can be really simple. Drop a TQuery on a form, set the SQL property, set Active and, voila, here's your database data in a DBGrid. Ok, you do need a TDataSource and a connection to a database, but that's just a few clicks away.

Now you want to insert, update and delete data. That's also easy but can get messy. You fight with the corect SQL syntax, but finally have it laid out correctly.

You introduce new tables, tables change in design ... and your simple task becomes slightly cumbersome :(

Can all this be done easily? The answer is yes: use an ORM

Read the full list to to locate your ORM - Object Relational Mapping / Persistence Frameworks for Delphi

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ORM - Object Relational Mapping / Persistence Frameworks for Delphi originally appeared on About.com Delphi Programming on Tuesday, February 9th, 2010 at 03:47:01.

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Delphi's NIL value and the Assigned RTL Function

2010-02-08T03:00:59Z

in Delphi TIPS :: In Delphi, the NIL constant (also a reserved word) is a pointer value defined as "not-assigned" or "pointer to nothing" or "undetermined". Understand NIL before you use it...

Read the full article to learn about Delphi's NIL value and the Assigned RTL Function.

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Delphi's NIL value and the Assigned RTL Function originally appeared on About.com Delphi Programming on Monday, February 8th, 2010 at 03:00:59.

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Convert a Virtual Key Code to a Character

2010-02-04T03:00:26Z

in Delphi TIPS :: Windows defines special constants for each key the user can press. The virtual-key codes identify various virtual keys. These constants can then be used to refer to the keystroke when using Delphi and Windows API calls or in an OnKeyUp or OnKeyDown event handler.

Read the full article to learn how to Convert a Virtual Key Code to a Character.

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Convert a Virtual Key Code to a Character originally appeared on About.com Delphi Programming on Thursday, February 4th, 2010 at 03:00:26.

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Creating Windows Service Applications Using Delphi

2010-02-02T08:25:22Z

in Advanced Dephi ::

Service applications take requests from client applications, process those requests, and return information to the client applications. They typically run in the background, without much user input. Services can be automatically started when the computer boots, can be paused and restarted, and do not show any user interface.

Read the full article to learn about Creating Windows Service Applications Using Delphi

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Creating Windows Service Applications Using Delphi originally appeared on About.com Delphi Programming on Tuesday, February 2nd, 2010 at 08:25:22.

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Capturing a Screen Shot of a TWebBrowser Content (Web Page) in Delphi

2010-02-01T03:00:21Z

in Delphi VCL :: You might need to programmatically grab the screen shot of the current page loaded in the web browser control. A custom Delphi function WebBrowserScreenShot will capture the contents of a TWebBrower's client area into a JPEG image and save it to a specified file.

Read the full article to learn how to Capture a Screen Shot of a TWebBrowser Content (Web Page) in Delphi.

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Capturing a Screen Shot of a TWebBrowser Content (Web Page) in Delphi originally appeared on About.com Delphi Programming on Monday, February 1st, 2010 at 03:00:21.

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Set the Checked property of a TCheckBox Delphi control Without raising the OnClick Event

2010-01-28T04:00:09Z

in Delphi TIPS :: The TCheckBox Delphi control displays a check box that can be on (checked) or off (unchecked). The Checked property specifies whether the check box is checked or not.

When the user click the check box to change its Checked state, the OnClick event for the check box is fired.

Read the full article to learn how to Set the Checked property of a TCheckBox Delphi control Without raising the OnClick Event.

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Set the Checked property of a TCheckBox Delphi control Without raising the OnClick Event originally appeared on About.com Delphi Programming on Thursday, January 28th, 2010 at 04:00:09.

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Extract Links From a HTML Page Using Delphi - Get Href Attribute From The A Tags

2010-01-26T06:21:22Z

in Delphi and HTML :: A very nice feature of a Browser is to display link information, for example, in the status bar, when the mouse hovers over a link in a document. This can also be done in Delphi: Get the Url of a Hyperlink when the Mouse moves Over a TWebBrowser Document. Sometimes, you "only" want to extract all the links from a HTML document / URL. You want to get the HREF attribute of all A tags.

Read the full article to learn how to Extract Links From a HTML Page Using Delphi - Get Href Attribute From The A Tags

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Extract Links From a HTML Page Using Delphi - Get Href Attribute From The A Tags originally appeared on About.com Delphi Programming on Tuesday, January 26th, 2010 at 06:21:22.

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SharpE - Open Source Delphi Windows Shell Replacement

2010-01-25T03:00:59Z

in Free Delphi Code ::
SharpDesk's powerful shell replacement makes crafting a luxurious desktop a delight. Every pixel of visible space can be personalized, and the export feature makes it easy to share your masterpieces. A single theme can be customized in dozens of ways with realtime wallpaper effects, icon sets, color schemes, and custom menu content.

Read the full article to find out more about SharpE - Open Source Delphi Windows Shell Replacement.

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SharpE - Open Source Delphi Windows Shell Replacement originally appeared on About.com Delphi Programming on Monday, January 25th, 2010 at 03:00:59.

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Programmatically Convert RGB Color to CMYK

2010-01-22T05:00:27Z

in Delphi TIPS :: The CMYK (Cyan, Magenta, Yellow, Black - Key Plate) model, refers to the 4 ink colors used by the printing press. C is cyan (blue-green), M is magenta (pinkish shade of red), Y is yellow, and K is black, the key plate or keyline color.

Read the full article to learn how to Programmatically Convert RGB Color to CMYK.

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Programmatically Convert RGB Color to CMYK originally appeared on About.com Delphi Programming on Friday, January 22nd, 2010 at 05:00:27.

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Understanding Delphi SET Types

2010-01-21T11:00:51Z

in Delphi Language :: One of the Delphi language features not found in other modern languages is the notion of sets. Delphi's set type is a collection of values of the same ordinal type. Learn about Delphi sets to better understand Delphi source code.

Read the full article to learn how and when to use Delphi SET types

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Understanding Delphi SET Types originally appeared on About.com Delphi Programming on Thursday, January 21st, 2010 at 11:00:51.

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