FAQs index of Delphi skill set

Source: Internet
Author: User
Tags crc32 import database

Delphi tips and FAQs Delphi skill set Index

VCL:

#0002 how can I draw the rotated text on canvas?
How to Write rotated text on the canvas

#0005 to change a font style (bold nodes) in standard ttreeview component
Change the font style of the ttreeview Control
 
#0008 to disable a form Movement
Disable Form Movement

#0010 to add the horizontal scrollbar in ListBox
Add a horizontal scroll bar to ListBox

#0012 to set a checkbox without onclick event
Cancel the onclick event of the checkbox

#0013 to disable the on-fly tooltips in ttreeview
Disable tooltip on ttreeview

#0018 the form life cycle after creation
Form Lifecycle

#0023 to get a line/column number that a memo/richtext cursor is on
Obtains the number of rows or columns of the current cursor on memo or richtext.

#0025 to use a ComboBox instead inplace editor in tstringgrid
Use ComboBox to replace the default editor in tstringgrid

#0028 the offsets for tmemo
Tmemo Branch

#0029 the Quick filling a ListBox with file names
Use a file name to quickly fill in ListBox

#0034 to change alignment for tedit
Set tedit alignment

#0035 to make a form like System Modal
Set form to System Mode

#0036 to create a non-rectangular Control
Create irregular controls
 
#0038 how to add a flat/hot track effect to components
How to add hotkey tracking on controls

#0057 to delete the row in tstringgrid component
How to delete rows in tstringgrid.

#0065 to save/restore the component into blob-field
Use bolb-field to save and restore controls.

#0067 access to some item of tradiogroup component
Access the sub-item of tradiogroup

#0085 to save/load the glyphs to/from external file
How to access glyphs from external files

#0094 to assign a values to tstrings instead objects
Assign a value to tstring to replace the object.

#0102 to scroll a text in memo in run-time
Scroll memo text in real time

#0146 standard RichEdit component and URL highlighting
Highlight the URL in the RichEdit control
 
#0148 AutoComplete for edit/ComboBox
Enable Automatic completion in edit or ComboBox.

#0154 to exchange items in tlistview
Subitem of extended tlistview

#0158 to change a font for tlistview Header
Change the font of the tlistview column header

#0159 flat header for tlistview
Change the column header of tlistview to a flat style.

#0160 numeric editbox
How to allow only numbers in editbox

#0163 to print the ttreeview and tlistview
Print content in ttreeview or tlistview

#0164 to display week numbers in tdatetimepicker
Display the day of the week in tdatetimepicker

Databases Database

#0021 Database Programming Technology (design patterns)
Database Programming Technology (Use design mode)

#0043 to navigate by selected rows in DBGrid
In DBGrid, navigate through the selected row

#0062 to get the alias list, Tables List etc
Returns a list of aliases similar to a data table.

#0063 to copy (to dublicate) the dataset record
Copy dataset records

#0065 to save/restore the component into blob-field
Use bolb-field to save and restore controls.

#0079 to export a dataset into XML-File
Import database data into XML file

#0081 to check if BDE exists
Check whether BDE exists

#0091 to play a wav-file from memory or blob-field
Play wav files directly from memory or blob-field

#0092 to switch a DBGrid in edit mode and set a cursor in some position
At a specific location of DBGrid, set DBGrid to edit mode and set the current cursor

#0108 to generate the script for table Creation
Generate an SQL statement for creating a table

#0109 to generate the script for select-Statement
Select SQL statement generation

#0111 to create table in MS access with Dao
In MS Access, use DAO to create a table

#0141 to save file in blob and restore later
Use BLOB fields to access files

#0150 use tclientdataset as memory Dataset
Use tclientdataset as a memory Dataset

#0168 to execute the query in MS access
Execute query in MS Access

Reports, Printing
Print or report

#0017 printer settings-page sizes and margins (Part1)
Set the print size and margins

#0019 to get a printer settings (Part 2)
Get printer settings

#0020 to set a printer settings
Set printer settings

#0022 printing on the tprinter using default resident font (Part 1)
Print with the default tprinter font

#0026 the printer capabilities to print a graphics
Improve the printer's ability to print images

#0032 to change the default printer in Windows
Change the default printer for Windows

#0047 the list of jobs in the MS Windows Print Spooler
List all print jobs in the Windows Print Buffer

#0068 to use a resident font for printing (Part 2)
Print in default font

#0083 to print/preview the MS access's report
Print or preview reports with MS Access

#0087 to send a command strings to printer
Send command string to printer

#0090 to print a bitmap on printer
Print bitmap

Email, Internet, network

#0037 how to get your local IP?
How to obtain the local IP Address

#0041 PC is connected to a network
Determine whether a PC is connected to the Internet.

#0049 to create the e-mail message in MS Outlook
Send mail via MS Outlook

#0080 to download the file from Web
Download files from the Web

#0088 how do I find a MAC address?
Obtain the MAC address

#0095 to receive a modem list, which is installed in Win95/98
How to obtain the list of installed modem Windows 95/98

#0115 to create an email messaqe by mapi
Send mail via mapi

#0116 to download a file from Internet using sockets
Use SOCKET to download files from the Internet

#0117 to select a recipient from addressbook
Select recipient from address book

#0120 to retrieve a folder list from MS Outlook
Restore the file list from MS Outlook

#0121 to retrieve items (messages/tasks/etc) from any Outlok folder
Add and restore content from the outlook File

#0123 to retrieve and save the attachments from the MS Outlok message
Restore and save attachments to outlook emails

#0126 HTTP/URL Encoding
HTTP/URL Encoding

#0127 to print URL/html file using IE browser
Print URL/html files in IE browser

#0139 twebbrowser and POST request
Use twebbrowse to access webpages

#0161 to read the Proxy Information
Get Proxy Information

Windows API

#0001 how can I create a screenshot?
Get screenshots

#0004 how can I receive a list of processes running on a system?
How to obtain the Process List

#0006 delete a file into Recycle Bin
Delete an object to the recycle bin

#0007 to detect a Windows Version
Detect windows

#0009 to switch a keyboard layout
Convert keyboard layout

#0011 to add a some forms in Windows Task Manager
Add the child form to the taskbar.

#0014 to get a system icons
Retrieve system icons

#0016 turn monitor power ON/OFF
Turn on or off the display power

#0027 the current computer and user names
Get the current computer name and User Name

#0052 To Get A sizes of some system controls
Obtain the system control size.

#0053 to set the clock (system datetime) in Windows
Set Windows system clock
 
#0070 to read the environment string
Obtain the environment string

#0082 to read the current code page of System
Read the current code page of the system (obtain the operating system type)
 
#0084 to load the icons from external dll/EXE
Extract icons from DLL or EXE

#0086 to register the file Extention and context menu
Register the file extension and context menu

#0098 to retrieve a full path of module in DLL
Obtain the full path of the module in the DLL

#0105 to refresh a desktop
Refresh Desktop

#0106 to read a path of system folder
Obtain the system folder path
 
#0112 to press a mouse button from code
Click the mouse in the program

#0131 to use extended windows dialogs
Windows extension dialog box

#0133 to read native text of current locale
Obtain local text

#0138 to change a color of standard tprogressbar
Change the tprogressbar color

#0140 to define a custom icon for some folder
Icon of the custom folder

#0147 to show/hide clocks in tray
Display or hide the clock in the taskbar

#0151 to display a Property dialog for file, folder or drive
Dialog box showing properties of files, folders, and drives

#0156 alternative for topendialog/tsavedialog
Use APIs instead of topendialog/tsavedialog

#0157 select the folder Dialog
Select folder dialog box

#0166 to change the view style for opendialog/savedialog
Change the display style of opendialog/savedialog

#0167 to change the alignment for tbutton
Sets the alignment of tbutton.

#0170 to add the Chevron button for Toolbar
Add a Special icon in the toolbar

#0171 to add Chevron to ttoolbar if some buttons are invisible (Part 2)
Add a Special icon to the toolbar for a non-visual button

Menu

#0030 to add item into System Menu
Add a menu to the System Menu

#0033 to add bitmaps to menu items
Add a bitmap to the menu
 
#0060 to align a menu item to right
Right-aligned menu

#0155 to show the system menu
Show System Menu

Tools api

#0003 How can I check the Delphi/C ++ builder version?
How to check the versions of Delphi/C ++ Builder

#0040 to read/write a property by name
Read/write attributes by name

#0054 to get a name of Enum Value
Retrieve enumeration worthy names

#0069 to receive a names of all registered components
Get all registered component names

#0070 to receive a names of all palettes, which was registered in IDE
Obtain the names of all panels registered with IDE

#0073 to receive the list of published properties of component (Part 1)
Obtain the published attribute list of a component (method 1)

#0074 to receive the list of published properties of component (Part 2)
Obtain the published attribute list of a component (method 2)

#0103 to change a default font in IDE
Change the default ide font

#0104 to disable a new project Creation
Disable Automatic project creation when IDE is opened

#0119 to register a component editor which will be activated by right mouse click in Delphi ide
Right-click Delphi IDE and register the component editor.

Ole, com

#0049 to create the e-mail message in Outlook
Send emails with Outlook

#0051 to create a shell link/shortcut
Create shortcuts

#0083 print/preview the MS access's report
Print and preview access calls

#0086 to register the file Extention and context menu
Register the extension and menu

#0089 description of instancing and threading models in com-servers
Introduction to com server instances and thread Modes
 
#0120 to retrieve a folder list from MS Outlook
List outlook folders

#0128 to create an appointment in MS Outlook
Use outlook to create a specified

#0142 to read a sender address for mailitem (MS outlook)
Read the sender's address from Outlook mail

#0143 to check if OLE object is installed
Check whether the OLE object is installed

#0144 fast data transfer to MS Excel
Quickly write data to excel
 
#0145 contact list in MS Outlook
Obtain outlook contact information

#0149 language for installed MS Office
Obtain the language of the Office installation

#0152 Replace text/font in Doc-File
Replace text/font in DOC files

#0153 open the password-protected XLS-file and save Without Password
Open the password-protected xls file and save it as a password-free xls file.
You can change it to a brute-force password.

#0169 find the file name by Activex/Ole Class Name
File name discovery through ActiveX/Ole Class Name

Files, drives

#0031 to detect a drive type
Check drive type

#0046 to get a file datetime
Time when the file is obtained using fileage

#0050 how do I execute a program and have my code wait until it is finished?
Execute a program and wait for it to end

#0051 to create a shell link/shortcut
Create shortcuts

#0055 to get the serial number of a disk
Obtain the disk serial number

#0058 to accept the dropped files from Windows Explorer
Retrieve the drop-down file from the windows browser

#0066 the file in use or not
Check whether the file has been opened

#0075 to map the network disk
MAP network Disks

#0114 to load a file list by some wildcard
Use wildcards to obtain the file list

#0118 to recieve a number of files in some folder by wildcard
Obtain the number of files using wildcards

#0122 to change a creation date/time for file on disk
Modify the Disk File Creation Time

Algorithms Algorithm

#0039 to save/load a font information in INI/Text-File
Save and load fonts in ini or TXT files
 
#0048 CRC32 Calculation
CRC32 Algorithm
The writer supplys a method for building a CRC table and calculate the file CRC

#0056 to play with colors (dark/Light)
Set the brightness and darkness of the color

#0093 hash function for strings
String Hash Function
The writer finds a good hash function in Delphi sources (dbtable. Pas ).

#0113 correct round of number
Rounding
 
#0124 extended dayofweek Function
Extended day of week notation

#0125 second Wednesday of November
Calculate the date of the second Wednesday of January 1, November.

#0129 checksum by modulus 10
The modulo 10 checksum provides an algorithm description. It is not a simple modulo.

#0136 elf Hash Algorithm
Another Hash Algorithm

#0162 to extract the plain text from HTML string
Extract plain text from HTML text.

Conversions Conversion

#0042 to convert the bitmap to JPEG and vice versa
Conversion between bitmpa and JPEG
Use the tbitmap and Tsung Image
 
#0044 to convert a color string into HTML Format
Convert a color string to HTML Format

#0045 to convert color value into gray-scaled color value
Convert the color value to the gray value

#0132 to add leading zeros for numbers
Add the leading zero before the number
 
#0137 to create a disabled bitmap
Create a gray bitmap

#0165 to convert the file size to string (a-la Explorer)
Convert the file size to a string (in explorer mode)

Multimedia

#0015 to open/close a CD-drive
Optical Drive Switch

#0078 to sound a beep for some action
Play beep

#0091 to play a wav-file from memory or blob-field
Play a WAV file from the memory or blob-field

Miscellaneous

#0056 to play with colors (dark/Light)
Change the color of the dark light display

#0059 to draw in area of the Form Caption
Operation Form Caption

#0061 to retrieve the vertical refresh rate of the display
Restore the display's vertical refresh rate
 
#0064 to draw a chart on some canvas
Draw a chart on the canvas

#0072 to change a line type for drawing
Change the line type

#0076 to change button caption in open/savedialog
Use setdlgitemtext to modify the name of the open/savedailog button

#0077 to get a mouse position
Use getcursorpos to get the mouse position and control the position of the pop-up menu

#0094 to assign a values to tstrings instead objects
Use tstrings to store common types instead of Objects

#0096 to hide an application from taskbar
Use setwindowlong to hide the application in taskbar

#0097 to hide/show the start button from Windows taskbar
Hide the Start menu on the taskbar

#0107 to add a custom control in standard Dialog
Add custom controls in the standard dialog box
 
#0110 to increase a performance of standard ttreeview/tlistview
Improve ttreeview/tlistview Performance

#0130 to use a procedure in DLL from Delphi code
The process of calling DLL in Delphi

#0134 Daylight Saving Time
When reading the shard
 
#0135 to filter a mouse and keyboard
Filters mouse and keyboard events to help users wait for progress bars.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.