DelphiBasics
ParamCount
Function
Gives the number of parameters passed to the current program System unit
 function ParamCount : Integer;
Description
The ParamCount function gives the number of command line parameters used to invoke the current executable.
Notes
The related ParamStr function returns these parameters as index values 1, 2 etc.
Related commands
CmdLine Holds the execution text used to start the current program
FindCmdLineSwitch Determine whether a certain parameter switch was passed
ParamStr Returns one of the parameters used to run the current program
 Author links

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Example code : Display command line parameters
var
  cmd : string;
  i : Integer;

begin
  // Before running this code, use the Run/parameters menu option
  // to set the following command line parameters : -parm1 -parm2
  cmd := CmdLine;
  ShowMessage(cmd);     // Show the execution command + parameters

  // How many parameters were passed?
  ShowMessage('There are '+IntToStr(ParamCount)+' parameters');

  // Show these parameters - note that the 0th parameter is the
  // execution command on Windows
  for i := 0 to ParamCount do
    ShowMessage('Parameter '+IntToStr(i)+' = '+ParamStr(i));
end;
Show full unit code
   "C:\Program files\Borland\Delphi7\Projects\Project1.exe" -parm1 -parm2
   There are 2 parameters
   Parameter 0 = C:\PROGRAM FILES\BORLAND\DELPHI7\PROJECTS\PROJECT1.EXE
   Parameter 1 = -parm1
   Parameter 2 = -parm2
 
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