Delphi tips

Delphi Articles

Howto...

• How to read and write a file to and from a string?
• How to execute an external application?
• How to show the Control Panel window or run a Control Panel applet?
• How to wait till an application ends?
• How to access the Windows Registry?
• How to determine the associated application?
• How to look for files?
• How to determine the short name (DOS name) of a file?
• How to access hidden properties?
• How to add new methods and properties without registering new components?
• How to know which column was clicked in a TListView?
• How to sort a TListView?
• How to determine the actual length of a string?
• How to look for files recursively in the hard disk?
• How to get the icon of an application or document?
• How to set the invisible color of a transparent image?
• How to imitate deltree.exe?
• How to get Windows important directories?
• How to compare a string with a pattern?
• How to determine if a file name matches a specification?
• How to set the desktop wallpaper?
• How to use custom cursors?
• How to automatically load a form on demand?
• How to make MessageDlg play the corresponding sound?
• How to play a custom sound?
• How to set the default printer?
• How to prevent the user from closing a form?
• How to create a unique temporary file?
• How to know if there is a disk/diskette/CD in a removable-disk drive?
• How to get the dates of the first and last day of the month of a given date?
• How to change the screen resolution?
• How to make an application run automatically when Windows starts?
• How to round numbers in different ways?
• How to close another application?
• How to start an application as an icon in the system tray?
• How to open a Microsoft Access .MDB database?
• How to get the list of all tables and queries in a database using the BDE?
• How to get the user name of a Windows session?
• How to get the computer's network name?
• How to get the drive letter of the CD-ROM drive unit?
• How to invoke the default mailer program to send an email?
• How to conquer the glitch of indistinguishable gray blobs in disabled menu items?
• How to put color to a button?
• How to remove the frame (border) of a progress bar?
• How to overcome the BorderWitdth property error?
• How to output angled (rotated) text?
• How to capture application messages?
• How to specify the size of an array at runtime?
• How to know if a form has moved?
• How to get the BIOS serial number?
• How to convert from TFileTime to TDateTime?
• How to read DOS files with special characters?
• How to prevent the user from selecting text in a memo control without setting Enabled to False??
• How to deactivate the popup menu that appears when we right-click components that allow editing?

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NOTE: Except where explicitly stated otherwise, these tips and articles are meant for Delphi 5, although many might work without modifications in previous versions of 32-bit Delphi.