The RichEdit component in Delphi is a powerful visual control that allows you to create and display formatted text within your applications.It provides features like font styling,colors,indentation,bullet points,and even embedded images,enabling you to bui...
In order to get the file attributes,you can get it by file search API. Here's an example of how to show the creation,last access and last modification dates and times of a file: .
Sometimes,you may confuse the name of the pointer type in delphi,because of the difference with C / C++.It's really make us confusion.Actually usage rule is also different,so I always forget how to use delphi pointer easily.Anyway below table is useful whe...
You can launch application on windows by ShellExecute function.Following is the simple example to launch application. In case of running DOS command application such as batch file and you want not to display user,put SW_HIDE in the function option as follo...
Here's how to use a TTF (true type font) in your Delphi application without having to install it in Windows:1.In the OnCreate event for the main form in your Delphi application call the AddFontResource API function.The AddFontResource function adds the fon...
Suppose you have a Web Form where uploading of files is enabled,using the HtmlInputFile HTML control,and a user is uploading an image.If you accept only images of a specified size,you might need to shrink the uploaded image / create a thumnail.Here's how...
Delphi provides useful function to access INI file.With TIniFile class,you can read and write easily.Below is the simple example writing INI files. And below is the example to read data from INI file. As you can see above,you can read and write data with m...
In case of using Delphi 2009 with Indy 10,when I try to send an email with TIdSMTP,on the received email this text arrived as questions marks '?????'.This is caused by TIdSMTP VCL bug.You can fix it by upgrading Indy10 at ftp: / / indy.fulgan.com download...
Just like main(argv,argc) in C,Delphi also has the similar variables to get parameter string coming from command line.Following is the simple example to display parameter list by showmessage function. As you can see above,you can know the total number of p...
Universal / Uniform Naming Convention.A UNC path describes the location of a volume,directory,or file.The format for a UNC path is \servervolumedirectoryfile and is not case-sensitive.For example:Rather than describe the location of a file or directory by ...
This function is useful to get file attribute.Usage: .In addition,below function must be included in order to use above function.
By using the SHBrowseForFolder Windows API function and Delphi we can invoke a Windows system dialog used to browse for files and folders on users hard drive as well as network computers and printers. First,let's look at what SHBrowseForFolder needs.Here's...
The BlockInput API function blocks keyboard and mouse input events from reaching applications.Place a Button (name: "Button1") on a form (name: "Form1") and use this code for the button's OnClick event handler.Once you click the button your mouse and keybo...
Cutting a graphic to the Clipboard is like copying it,but you also erase the graphic from the source.
To hide the caption bar you need to override on of the default form methods CreateParams (this also exists for other objects).The CreateParams method initializes a window-creation parameter record passed in the Params parameter (ref:Delphi Help).Go to the ...
Obtains the language that Windows is using.
To remove the icon from the taskbar,you need to call a Windows API call:Delphi makes it very easy to use this command.All you need to do is supply the Application.handle and SW_HIDE to remove the icon from the taskbar. To display the icon on the taskbar us...
Create a different form in your application.
This code shows how to set the system time to another value.
Some English speaking countries use the "point" as decimal separator,while the rest of the world is using the "comma".How can you make sure that the user will press the correct key when entering a number with a decimal fraction? With the code in this examp...
Identify the Windows version of your system .
Change the wallpaper of your system by code .
Shows how to activate the next or prior control in a form .next control: .prior control: .
Get the total and available memory in your system.(Total free memory space in your system) .
Show how to paint a form in a different way.
Take a look at TDatabase.You can set the Alias property to the physical path at runtime.InstallShield Express,which ships with D2 and D3 (and greater)lets you define new aliases with paths relative to the directory where the user installs the program.The c...
Use the registry to register your own filetype .
Use this function to open your browser with a given URL.
Use this code to verify if a soundcard is installed in your system .
This source code sets the SQL String in Query1.As it fits on one line we just use SQL[0].The SQL statement finds all the fields from the Article table where the user_id field is equal to a varaible Text value dbtUser.Text.A better way would be to use Param...