Delphi File I/O Status Check Print ShellExecute SMTP CreateFile SW_SHOW GetDriveType SendMail SQL SW_HIDE TPrintDialog Removable Disk Detection TOSVERSIONINFO Print Dialog GetVolumeInformation Delphi Folder Navigation Dialog Is Audio CD ShowWindow Transparent Text Out GetSystemDefaultLangID GENERIC_READ aliases GENERIC_WRITE Hide Taskbar Hide Caption Bar HDD Volume Name GetSysDir GetWindowsVersion GetSystemDir HDD Volume Lable GetVersionEx Hard Disk Volume Name GetWinDir Hard Disk Volume Lable Gradient Filled Form GetWindowsDir GetWindowsDirectory Delphi File System Control available memory available memory size BrowseInfo Caption Bar ChangeDisplaySettings Comma Comma Separator confirm DateTimeToSystemTime Decimal Separator Animated Application Icon free memory space DISP_CHANGE_FAILED DISP_CHANGE_NOTUPDATED DISP_CHANGE_SUCCESSFUL Drive Type EnumDisplaySettings External Hard Disk File Association File Type Registration 켜져있는시간

SHGETSPECIALFOLDERLOCATION.ZIP

Does my CD-ROM drive contain an audio CD?   (created at Sep 10, 2007)   26  

We can use the Windows API function GetDriveType() to test if the drive is a CD-ROM drive then use the Windows API function GetVolumeInformation() to test if the VolumeName is 'Audio CD'.function IsAudioCD(Drive : char) : bool;var   DrivePath : s...

Convert a mapped drive to a full UNC path   (created at Sep 10, 2007)   64  

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:    \Shared1_svrShared1WGroupsNetworkOrders.xlsR...

Checking If File Is In Use   (created at Sep 10, 2007)   42  

IsFileInUse will return true if the file is locked for exclusive access. It would fail if the file doesn't exist at all. function IsFileInUse(fName : string) : boolean;var    HFileRes : HFILE;begin    Result := false;    if no...

Browse for Computers, Folders, Files and Printers   (created at Sep 10, 2007)   39  

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...

How to draw Transparent Text on bitmap   (created at Sep 01, 2007)   40  

You can set transparent mode by calling SetBkMode function.procedure TForm1.Button1Click(Sender: TObject);begin  with Image1.Picture.Bitmap.Canvas do  begin    Font.Color  := clBlue;    Brush.Style := bsclear;   ...

How Do I Remove The Application Icon From The Taskbar?   (created at Aug 25, 2007)   32  

To remove the icon from the taskbar, you need to call a Windows API call:BOOL ShowWindow(HWND hwnd,int nCmdShow);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 task...

How To Show The Print Dialog And Print Text Files   (created at Aug 25, 2007)   50  

This code show an example of how to print a text of a RichEdit component.unit Unit1; interface uses   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,   StdCtrls, ComCtrls; type   TForm1 = class(TForm)     ...

How To Make An Animated Application Icon   (created at Aug 25, 2007)   52  

Show how to create an animated icon in your programvar  icon1:Boolean; ... procedure TForm1.Timer1Timer(Sender: TObject); begin   if icon1=false then   begin     Application.icon:=Image1.Picture.Icon;      icon1:=tru...

How To Pass The Focus To The Next/prior Control   (created at Aug 25, 2007)   54  

Shows how to activate the next or prior control in a formnext control: SendMessage(Form1.Handle, WM_NEXTDLGCTL, 0, 0); prior control: SendMessage(Handle, WM_NEXTDLGCTL, 1, 0);

How To Make Rounded Windows   (created at Aug 25, 2007)   34  

Create a different form in your application...procedure TForm1.FormCreate(Sender:TObject);  var    region: HRgn;  begin    region:=CreateEllipticRgn(1,1,200,200);    SetWindowRgn(handle, region, true);  end;

How To Get Windows Uptime   (created at Aug 25, 2007)   37  

Find how long Windows has been working...function UpTime: string; const ticksperday : integer = 1000 * 60 * 60 * 24; ticksperhour : integer = 1000 * 60 * 60; ticksperminute : integer = 1000 * 60; tickspersecond : integer = 1000; var  t : longword; &nb...

How To Find Out Total And Available Memory   (created at Aug 25, 2007)   33  

Get the total and available memory in your system. (Total free memory space in your system)procedure TForm1.Button1Click(Sender: TObject); var   memory:TMemoryStatus; begin   memory.dwLength:=sizeof(memory);   GlobalMemoryStatus(memory); &nb...

How To Change The System Time   (created at Aug 25, 2007)   33  

This code shows how to set the system time to another value.procedure TForm1.Button1Click(Sender: TObject); var    systemtime : TSystemTime;    NewTime:string; begin    NewTime:='13:58:00';    DateTimeToSystemTime( D...

How To Get The Windows OS Version   (created at Aug 25, 2007)   47  

 Identify the Windows version of your systemfunction GetWindowsVersion : string;  var    OsVinfo   : TOSVERSIONINFO;    HelpStr   : array[0..50] of char;  begin    ZeroMemory(@OsVinfo,sizeOf(OsVinfo));...

How To Change The Desktop Wallpaper   (created at Aug 25, 2007)   35  

Change the wallpaper of your system by codeuses    Registry, WinProcs;  procedure SetWallpaper(               sWallpaperBMPPath : String;               bTile : boolean );&...

How To Get The Windows Language   (created at Aug 25, 2007)   32  

Obtains the language that Windows is using.function Language:string;  var    sLangID:LangID;    sLanguage: array [0..100] of char;  begin    sLangID:=GetSystemDefaultLangID;    VerLanguageName(sLangID,sLang...

How To Make A Gradient Filled Form   (created at Aug 25, 2007)   29  

Show how to paint a form in a different way...procedure TForm1.FormPaint(Sender: TObject); var   Row, Ht: Word;   IX: Integer; begin   iX :=200 ;   Ht:=(ClientHeight + 512) div 256;   for Row := 0 to 512 do   begin   &nbs...

How can I hide the caption bar on a form?   (created at Aug 25, 2007)   31  

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 ...

How To Send An E-mail By Code   (created at Aug 25, 2007)   29  

Use this function to send an e-mail through your program. You must have the component TNMSMTP from FastNet tools. This component is included in Delphi 4-5 Professional and Enterpriseprocedure TForm1.Button1Click(Sender: TObject); begin   NMSMTP1.Host ...

How To Open Url In Default Webbrowser   (created at Aug 25, 2007)   32  

Use this function to open your browser with a given URL.uses    shellapi;  ....  procedure TForm1.Label1Click(Sender:TObject);  begin    shellexecute(handle,'open','http://www.swissdelphicenter.ch', nil,nil,sw_show); ...

How To Check If A Soundcard Is Installed   (created at Aug 25, 2007)   42  

Use this code to verify if a soundcard is installed in your systemuses mmsystem;  ...  function Soundkarte:Boolean;  begin    Result := WaveOutGetNumDevs >0;  end;

How To Change Screen Resolution   (created at Aug 25, 2007)   57  

Change the resolution of your screen.Actually I've ever used this function for TV-based software development, because of TV-resolution.{ The function NewRes can have the following result: DISP_CHANGE_SUCCESSFUL The settings change was successful. DISP_CHAN...

How To Force The Correct Decimal Separator   (created at Aug 25, 2007)   30  

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 exa...

How To Register Own File Types   (created at Aug 25, 2007)   56  

Use the registry to register your own filetypeuses registry; procedure TForm1.RegisterFileType(prefix:String; exepfad:String); var   reg:TRegistry; begin   reg:=TRegistry.Create;   reg.RootKey:=HKEY_CLASSES_ROOT;  

How To Get Volume Name   (created at Aug 25, 2007)   33  

Obtains the volume name of a indicated drivefunction VolumeName(Laufwerk: Char): string; var max, Flags: DWORD;     Buf: array [0..MAX_PATH] of Char; begin  try   GetVolumeInformation(PChar(Laufwerk + ':'), Buf, sizeof(Buf), nil, max, F...

How To Get Windows And System Directory   (created at Aug 25, 2007)   40  

Get the name of the Windows and System directory used in your systemfunction GetWinDir: String; var   dir: array [0..max_path] of char; begin  GetWindowsDirectory(dir, max_path);  result:=StrPas(dir); end; function GetSysDir: String; var &nb...

Get The Drive Type   (created at Aug 25, 2007)   42  

Shows how to identify the type of the drive you are acessing.procedure TForm1.Button1Click(Sender: TObject); var   typ:Integer;   s: string; begin   s:='C:';   typ:=GetDriveType(PChar(s));   if Typ <> 0 then case typ of   &nbs...

How can I modify aliases programmatically ?   (created at Aug 25, 2007)   48  

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.Th...

Setting TQuery SQL Statement   (created at Aug 25, 2007)   4,303  

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 Para...