How to create a dll file from cpp file ?

[gauravji]

Hi ,

I want to create a dll using the cpp file. I have followed some steps which I got from the some forums and tried to create a dll and it throws the following errors.

**********************************************************
islicenseviewed.cpp(19) : error C2146: syntax error : missing ';' before identifier 'CALLBACK'

islicenseviewed.cpp(19) : error C2501: 'BOOL' : missing storage-class or type specifiers

islicenseviewed.cpp(19) : fatal error C1004: unexpected end of file found

Generating Code...
Error executing cl.exe
***********************************************************

I have turned off the using of the precompiled headers. I don't know how to avoid these errors.

Please help me on this.

Thanks and Regards,
Gauravji

[Nick Evan]

You have problems in your sourcecode. Please post your code so we can help you.

[Ancient Dragon]

did you include windows.h? That's where BOOL and CALLBACK are defined.

[gauravji]

Hi,

Please find the source code below.

//***********************************************************
//** This source code is provided "AS IS" with no warranties, 
//** and confers no rights.
//** Author: Kallely L Sajan (<snip e-mail>)
//***********************************************************
//** Include the standard header files here
 //#include "stdafx.h"
 //#include < windows.h >
 //#include < msi.h >
 //#include < msiquery.h >
//***********************************************************
//** Call back function for EnumChildWindows()
//**---------------------------------------------------------
//** Author: Kallely L Sajan (<snip email>)
//***********************************************************
BOOL CALLBACK EnumChildProc(HWND hwnd,LPARAM lParam)
{
  TCHAR buf[100];
  GetClassName( hwnd, (LPTSTR)&buf, 100 );
  if ( _tcscmp( buf, _T("RichEdit20W") ) == 0 )
  {
   *(HWND*)lParam = hwnd;
   return FALSE;
  }
  return TRUE;
}

//***********************************************************
//** Custom action to check if the license is completly 
//** viewed. 
//**---------------------------------------------------------
//** Return values:
//**  (1) Always returns success
//**    (2) Sets the private property LicenseViewed when 
//**        the text is scrolled to near end.
//**---------------------------------------------------------
//** Usage:
//**  (1) Change "MyProduct Installer" to the window title 
//**     of the license agreement window
//** (2) In the license agreement dialog, on the scrollable 
//**      text control event, call the custom action 
//**      CheckLicenseViewed using a DoAction
//**  (3) For the Next button, modify the Enable 
//**      ControlCondition to include the property 
//**      LicenseViewed
//**---------------------------------------------------------
//** Author: Kallely L Sajan (<snip email>)
//***********************************************************
UINT __stdcall CheckLicenseViewed(MSIHANDLE hMSI)
{
 HWND hWnd;
 HWND hWndChild=NULL;
 if (MsiEvaluateCondition(hMSI,"LicenseViewed")==MSICONDITION_FALSE) 
 {
  hWnd = FindWindow(NULL, "MyProduct Installer");
  if (hWnd) 
  {
   EnumChildWindows( hWnd, EnumChildProc, (LPARAM)&hWndChild );
   if ( hWndChild ) 
   {
    SCROLLINFO sinfo;
    sinfo.cbSize=sizeof(sinfo);
    sinfo.fMask=SIF_TRACKPOS | SIF_RANGE | SIF_POS | SIF_PAGE;
    GetScrollInfo(hWndChild, SB_VERT, &sinfo);
    //max range depends on page size
    UINT MaxScrollPos = sinfo.nMax  - (sinfo.nPage - 1) ;
    //max less, say 5 - an allowable max.
    MaxScrollPos = MaxScrollPos - 5;
    if (sinfo.nTrackPos  > MaxScrollPos) 
    {
     MsiSetProperty(hMSI, TEXT("LicenseViewed"), TEXT("1"));
    }
    else
     MsiSetProperty(hMSI, TEXT("LicenseViewed"), NULL);
   }
  }
 }
 return ERROR_SUCCESS;
}

Please let me know what is wrong with this and how can I create a dll from this ?

Thanks and Regards,
Gauravji

[Ancient Dragon]

:cheesy: :cheesy: :cheesy: you commented out all the include files:eek: