Delphi Program can command level execution program with hidden mode Below is the example of running command with hidden mode. Actually there lots of command type in Windows like SW_NORMAL, SW_HIDE, ...What I am going to implement is running windows command with hidden mode.Below is the example of windows command execution ... |
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I want to select directory(folder) not file. How can I do that ? Delphi provides function for directory(folder) selection as following.uses FileCtrl;var dir : string;begin if SelectDirectory(dir, [sdAllowCreate, sdPerformCreate, sdPrompt], 0) then begin m_directory.Text := dir;... |
How to print external document ? Without complex programming, you can print document by ShellExecute function.use ShellAPI;...ShellExecute(Handle, 'print', PChar('c: est est.doc'), nil, nil, SW_SHOW); |
How to launch application ? You can launch application on windows by ShellExecute function. Following is the simple example to launch application.use ShellAPI;...ShellExecute(Handle, 'open', PChar('c: estapp.exe'), nil, nil, SW_SHOW);In case of running DOS command application such as... |
How to install an INF file using Delphi ? If you need to install an "inf" file using Delphi, you could use the next code: { Usage: InstallINF('C:XYZ.inf', 0) ; } uses ShellAPI; function InstallINF(const PathName: string; hParent: HWND): Boolean; var instance: HINST; begin &nbs... |
Get A Print Dialog Box By Clicking A Button In some applications,some times we need a print buttonHere is a sample tip code to get print properties. |
How Do I Remove The Application Icon From The Taskbar? 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 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 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 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 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 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 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 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 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 Change the wallpaper of your system by codeuses Registry, WinProcs; procedure SetWallpaper( sWallpaperBMPPath : String; bTile : boolean );&... |
How To Get The Windows Language 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 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? 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 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 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 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 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 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 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 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 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 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 ? 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 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... |