About Delphi Programming

Use an Icon for a Glyph on a TBitBtn Delphi control with the help of TImageList

2009-11-06T02:00:23Z

in Delphi TIPS ::
The TBitBtn Delphi control is a button control that can include a bitmap on its face.

The Glyph property specifies the bitmap that appears on the bitmap button.

By design, the Glyph property can only display BMP (Windows Bitmap) images.

Read the full article to learn how to Use an Icon for a Glyph on a TBitBtn Delphi control with the help of TImageList

Use an Icon for a Glyph on a TBitBtn Delphi control with the help of TImageList originally appeared on About.com Delphi Programming on Friday, November 6th, 2009 at 02:00:23.

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Implementing the OnClick Event for a Panel on a TStatusBar Delphi control

2009-11-05T02:00:08Z

in Using Delphi VCL ::
Delphi's TStatusBar control displays a row of panels, usually aligned at the bottom of a form. The Panels property of the TStatusBar control is a collection of TStatusPanel objects.

The TStatusBar exposes the OnClick event that gets fired when the user clicks the control.

Unfortunatelly, there's no "Panel Click" event to be fired when a particular Status Panel is clicked.

Read the full article to learn how to know what StatusBar Panel was Clicked

Implementing the OnClick Event for a Panel on a TStatusBar Delphi control originally appeared on About.com Delphi Programming on Thursday, November 5th, 2009 at 02:00:08.

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GT Delphi Components � Freeware Components With Full Source Code

2009-11-03T02:00:31Z

in Free VCL Sets :: Looking for a free source multi-purpose Delphi component collection to add more power to your applications? Look no more, here's a list of the best Delphi component sets (free with source) on the Net!

The list includes the GT Delphi Components. GT Component Pack is a freeware set of visual and non-visual components distributed will full source code.
Some of the components (their names): TgtFileInfo, TgtAutoAppStarter, TgtDateCtrlManager, TgtSplashScreen, TgtYouTubeVideoPlayer, TgtMenuTreeView, ...

Read the full article to locate more Free Delphi Component Sets

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GT Delphi Components � Freeware Components With Full Source Code originally appeared on About.com Delphi Programming on Tuesday, November 3rd, 2009 at 02:00:31.

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TQPDF - Delphi Wrapper for the Open Source QPDF.DLL a PDF-2-PDF Tool

2009-11-02T07:07:12Z

in Delphi Does PDF :: If you need to create, edit and manipulate PDF documents from your Delphi applications, there are quite a few libraries you can choose from: PDF managing tools for Delphi.

I have a Delphi application that needs to validate existing PDF documents. One task is to get (and optionally change) the version of the PDF document, check if it is password protected in any way and check if it is optimized for fast web view (and optimize if needed). I did try a few native Delphi PDF tools but was unlucky to find one that does it all.

After searching the Internet for a PDF library I could use, I've stumbled on an open source C++ QPDF - a command-line program that does structural, content-preserving transformations on PDF files.

QPDF is capable of creating linearized (also known as web-optimized) files and encrypted files. It is also capable of converting PDF files with object streams (also known as compressed objects) to files with no compressed objects or to generate object streams from files that don't have them (or even those that already do).

QPDF is not a PDF content creation library, a PDF viewer, or a program capable of converting PDF into other formats. In particular, QPDF knows nothing about the semantics of PDF content streams. Once you have a valid PDF file, QPDF can be used to transform that file in ways perhaps your original PDF creation can't handle. For example, programs generate simple PDF files but can't password-protect them, web-optimize them, or perform other transformations of that type.

Read the full article to learn about TQPDF - Delphi Wrapper for the QPDF Library

Note: if you are looking for a Delphi library that supports PDF creation, manipulation, etc. take a look at Quick PDF Library. Quick PDF Library (Delphi source code, royalty-free PDF developer SDK) is a comprehensive set of functions that allow you to create, render, print split, merge, encrypt, modify and manipulate PDF form fields. It also provides advanced support for JavaScript.

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TQPDF - Delphi Wrapper for the Open Source QPDF.DLL a PDF-2-PDF Tool originally appeared on About.com Delphi Programming on Monday, November 2nd, 2009 at 07:07:12.

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Understanding ScreenToClient and ClientToScreen Delphi methods

2009-10-30T02:00:41Z

in Delphi TIPS ::
Every Delphi control, descendant of the TControl class, exposes two methods you can use to convert point coordinates: ScreenToClient and ClientToScreen.

In screen coordinates (0, 0) corresponds to the upper left corner of the screen.

In client area coordinates (0, 0) corresponds to the upper left corner of the control's client area.

Read the full tip to find out when and how to use ScreenToClient and ClientToScreen

Understanding ScreenToClient and ClientToScreen Delphi methods originally appeared on About.com Delphi Programming on Friday, October 30th, 2009 at 02:00:41.

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Displaying the Percentage Character in Delphi's Format function

2009-10-29T02:00:12Z

in Delphi TIPS :: Delphi's Format (declared in the SysUtils unit) function can be used to construct a formatted string assembled from a format string and an array of arguments. Here's how to make it display a "stand-alone" percentage character.

Read the full tip to find out how to display the percentage character in Delphi's Format function. Plus: how to fix the "Format '% ' invalid or incompatible with argument" error.

Displaying the Percentage Character in Delphi's Format function originally appeared on About.com Delphi Programming on Thursday, October 29th, 2009 at 02:00:12.

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What is the Result of Un-Camel-Casing: "UnCamelCaseTHISString"? I Need Help to Pick the Winning Algorithm :)

2009-10-28T09:05:35Z

in UnCamelCase Challenge ::
While I'm testing and preparing to post the results of the UnCamelCase Challenge, I've run into a small problem :(

What do you expect the result of the UnCamelCase function should be when the string provided is "UnCamelCaseTHISString"?

I have already received more than 50 submission. Some algorithms are fast, some slow, some in a few lines of code, some are "big". Some will be published, some not. BUT, I do have a problem, since I have (obviously) not provided clear instructions for the algorithm .. but that's life :)

Anyway, what do you think the result should be in this case:

What is the Result of Un-Camel-Casing: "UnCamelCaseTHISString"? I Need Help to Pick the Winning Algorithm :) originally appeared on About.com Delphi Programming on Wednesday, October 28th, 2009 at 09:05:35.

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Validate an XML Against a DTD using TXMLDocument and Delphi

2009-10-27T05:32:47Z

in Delphi TIPS :: A DTD file can be created to specify valid tags and attributes. The purpose of a DTD is to define the structure of an XML document. It defines the structure with a list of legal elements. Here's how to programmatically validate an XML against a DTD using TXMLDocument and Delphi.

Read the full article to learn how to Validate an XML Against a DTD using TXMLDocument and Delphi

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Validate an XML Against a DTD using TXMLDocument and Delphi originally appeared on About.com Delphi Programming on Tuesday, October 27th, 2009 at 05:32:47.

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Thank You Community For The "Delphi Legends 2009 SILVER Award"

2009-10-26T03:00:38Z

in Delphi 2009 Community Award :: I've been awarded with a Silver Delphi Helmet - Delphi Legends 2009 Community Award! A big thanks to all who voted.

On October 17, 2009 a poll was posted on the Wings of the Wind blog. The poll presented 7 nominees for the Spirit of Delphi Award 2009. My name was on the list. I am honored to be put on the same list where one can find Peter Below, Jim McKeeth, Neil Moffat and others.

Personally, I voted for Peter Below. It's a shame Peter does not have a web site, as he has provided and still does tons of Delphi snippets and solutions over at the newsgroups, at least for a century. I think Peter deserves the Platinum award.

Since the "Spirit of Delphi Award" was in the past (for the last 10 years) awarded by the Delphi R&D team to people of the Delphi community whose contribution through time was "recognized", and since it seems that a name will be picked up this year also, the mentioned poll/award was renamed to "Delphi Legends 2009 Community Award".

Once again, a big thanks to all who participated in the poll! Here's the original blog post: Delphi Legends 2009 Community Award.

Thank You Community For The "Delphi Legends 2009 SILVER Award" originally appeared on About.com Delphi Programming on Monday, October 26th, 2009 at 03:00:38.

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Create the Future: Delphi 2010 Survey

2009-10-25T04:08:44Z

in Delphi Future: Guide the future of Delphi: take the time to fill in the 2010 Delphi user survey. Note: have at least 30 minutes of you time to finish the survey.

Click Here to take the Delphi 2010 Survey.

Note: this survey is not about Delphi 2010 / RAD Studio 2010 but an annual yearly survey for the year 2010. Take the survey even if you are still developing in Delphi 1,2,3,4,5,6,7....

Create the Future: Delphi 2010 Survey originally appeared on About.com Delphi Programming on Sunday, October 25th, 2009 at 04:08:44.

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