IPB_VM interface

Description

The IPB_VM interface loads PowerBuilder applications in third-party applications and interoperates with the PowerBuilder virtual machine (PBVM).

Methods

IPB_VM has two methods:

Description

Creates an IPB_Session object that can be used to call PowerBuilder functions.

Syntax

CreateSession(LPCTSTR   applicationName, LPCTSTR* libraryList, pbuint numLibs, IPB_Session**   session)

Returns

PBXRESULT. PBX_OK for success.

Examples

Example 1

This example creates an IPB_Session with the simple library list mydemo.pbl:

IPB_Session* session;
IPB_VM* vm = NULL;
fstream out; 
ifstream in;
PBXRESULT ret;

HINSTANCE hinst=LoadLibrary("pbvm125.dll");
if ( hinst== NULL) return 0;

out<< "Loaded PowerBuilder VM successfully!"<<endl;

P_PB_GetVM getvm = (P_PB_GetVM)GetProcAddress
   (hinst, "PB_GetVM");
if (getvm == NULL) return 0;

getvm(&vm);
if (vm == NULL) return 0;

static const char *liblist[] = 
{
   "mydemo.pbl"
};

ret= vm->CreateSession("mydemo", liblist, 1, &session);
if (ret != PBX_OK) 
{
   out << "Create session failed." << endl;
   return 0;
}
out << "Create session succeeded!" <<endl;

See also

Description

Runs the specified application.

Syntax

RunApplication(LPCTSTR   applicationName, LPCTSTR* libraryList, pbuint numLibs, LPCSTR commandLine, IPB_Session**   session)

Returns

PBXRESULT. PBX_OK for success.

Examples

Example 1

This code fragment loads the PowerBuilder VM and runs an application called runapp that uses one library, runapp.pbd. It passes in a command line with two arguments:

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   LPCTSTR szHello = "Hello world";

// Provide command line parameters (employee ids)
// to be passed to the PowerBuilder application
   LPCTSTR szcommandline = "102 110"; 

   int wmId, wmEvent, ret;
   PAINTSTRUCT ps;
   HDC hdc;

   switch (message) 
   {
      case WM_CREATE:
         {
         hPBVMInst = ::LoadLibrary("pbvm125.dll");

         P_PB_GetVM getvm = (P_PB_GetVM)
            GetProcAddress(hPBVMInst,"PB_GetVM");

         IPB_VM* vm = NULL;

         getvm(&vm);

         static const char *liblist [] =
            {"runapp.pbd"};
         
         vm->RunApplication("runapp", liblist, 1,
            szcommandline, &session);
         
         break;
         }

See also