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C/C++ Source or Header  |  1993-06-15  |  6KB  |  134 lines
  1. /*------------------------------------------------------------------------------* 
  2.  |                                                                              |
  3.  |                          File Name: AFXVBX.CPP                               |
  4.  |                                                                              |
  5.  | Description:  This file contains all the functions for the AFXDLL used by    |
  6.  |               its calling application APP.EXE                                |
  7.  |                                                                              |
  8.  | History:      Date              Author                Comment                |
  9.  |             05/23/93      Pran Punniamoorthy          Created with the help  |
  10.  |                                                       of John Seghers        |
  11.  |                                                                              |
  12.  *------------------------------------------------------------------------------*/
  13. #include <afxwin.h>
  14. #include <afxext.h>
  15. #include <afxdllx.h>    // standard MFC Extension DLL routines 
  16. #include "afxdllres.h"   // The DLL resource definitions
  17. #include "afxvbx.h"     // The DLL class definitions
  18.  
  19. HINSTANCE hInstDLL;     // Global copy of the DLL instance handle
  20.  
  21. /////////////////////////////////////////////////////////////////////////////
  22. // Initialization of MFC Extension DLL
  23.  
  24. static AFX_EXTENSION_MODULE NEAR extensionDLL = { NULL, NULL };
  25.  
  26. extern "C" int CALLBACK LibMain(HINSTANCE hInstance, WORD, WORD, LPSTR)
  27. {
  28.     // Extension DLL one-time initialization - do not allocate memory here,
  29.     //   use the TRACE or ASSERT macros or call MessageBox
  30.  
  31.     AfxInitExtensionModule(extensionDLL, hInstance);
  32.     hInstDLL = hInstance;
  33.     return 1;   
  34. }
  35.  
  36. /////////////////////////////////////////////////////////////////////////////
  37. // Exported DLL initialization is run in context of running application      
  38.  
  39. extern "C" extern void _export WINAPI InitAfxVbx()
  40. {
  41.     new CDynLinkLibrary(extensionDLL);
  42.  
  43.     CWinApp* pApp = AfxGetApp(); 
  44.     ASSERT(pApp != NULL);
  45.     
  46.     pApp->m_pMainWnd = new CMainWindow();           // Create MainWindow object
  47.     pApp->m_pMainWnd->ShowWindow(SW_SHOWNORMAL);
  48.     pApp->m_pMainWnd->UpdateWindow();   
  49.     
  50.     WNDCLASS wndClass;
  51.     
  52.     if(::GetClassInfo(hInstDLL,"VBControl",&wndClass)==0) // Get the wndclass struct. of class VBControl
  53.       {
  54.       VERIFY(::GetClassInfo(AfxGetInstanceHandle(),"VBControl",&wndClass)); 
  55.       wndClass.hInstance = hInstDLL; // Change the instance handle so it is that of the DLL and not the App.
  56.       VERIFY(::RegisterClass(&wndClass));  // Register the class
  57.       }
  58.       
  59. }
  60.  
  61.  
  62. /*------------------------------------------------------------------------------*
  63.  |                       Constructor For class CMainWindow                      |
  64.  |                                                                              |
  65.  | Description:  In the constructor, the main window for the application is     |
  66.  |               created.                                                       |
  67.  |                                                                              |
  68.  | Parameters :  none                                                           |
  69.  |                                                                              |
  70.  | Returns    :  void                                                           |
  71.  |                                                                              |
  72.  *------------------------------------------------------------------------------*/
  73.  
  74. CMainWindow::CMainWindow()
  75. { 
  76.     Create( NULL, "VBX Control resource of AFXDLL",
  77.         WS_OVERLAPPEDWINDOW, rectDefault, NULL, MAKEINTRESOURCE(IDR_MENU1) );    
  78. }
  79.  
  80. /*------------------------------------------------------------------------------*
  81.  |                       CMainWindow::OnVBXDialog()                             |
  82.  |                                                                              |
  83.  | Description:  This function displays a dialog box that contains a vbx control|
  84.  |               which is a resource of the DLL.                                |
  85.  |                                                                              |
  86.  | Parameters :  none                                                           |
  87.  |                                                                              |
  88.  | Returns    :  void                                                           |
  89.  |                                                                              |
  90.  *------------------------------------------------------------------------------*/
  91.  
  92. void CMainWindow::OnVBXDialog()
  93. {
  94.     CVBXDialog vbxDialog(IDD_DIALOG1);
  95.     vbxDialog.DoModal();
  96. }
  97.  
  98.  
  99.  
  100. ////////////////////////////// The Message Map for class CMainWindow /////////////////////////
  101.  
  102. BEGIN_MESSAGE_MAP( CMainWindow, CFrameWnd )
  103.     ON_COMMAND( ID_DIALOG_DIALOGPRESS, OnVBXDialog )
  104. END_MESSAGE_MAP()              
  105.  
  106.  
  107. /*------------------------------------------------------------------------------*
  108.  |                       CVBXDialog::OnInitDialog()                             |
  109.  |                                                                              |
  110.  | Description:  This function does the necessary function calls to get a vbx   |
  111.  |               control that is part of a dialog that is a resource of a AFXDLL|
  112.  |               to be displayed correctly.  Add your own initialization code   |
  113.  |               below the comment line "Add your initialization code below".   |
  114.  |                                                                              |
  115.  | Parameters :  none                                                           |
  116.  |                                                                              |
  117.  | Returns    :  BOOL                                                           |
  118.  |                                                                              |
  119.  *------------------------------------------------------------------------------*/
  120.  
  121. BOOL CVBXDialog::OnInitDialog()
  122. {
  123.     HINSTANCE hOldInstance = _AfxGetAppData()->appCurrentInstanceHandle;
  124.     _AfxGetAppData()->appCurrentInstanceHandle = hInstDLL;
  125.     CDialog::OnInitDialog();
  126.     _AfxGetAppData()->appCurrentInstanceHandle = hOldInstance;
  127.  
  128.     // Add your initialization code below
  129.     
  130.     return TRUE;
  131. }
  132.   
  133.   
  134.