C / C++ / MFC

//////////////////////////////////////////////////////////////////////
// In the DLL

class __declspec(dllexport) CPSTDriverInterface
{
public:
static short GetCnlVarsCount();
static int *GetAllCnlVar(short var_rank);
static int *GetAllCnlVar(char *szProtVarName);
};
short CPSTDriverInterface::GetCnlVarsCount()
{
    return 3;
}
int *CPSTDriverInterface::GetAllCnlVar(short var_rank)
{
    return 0;
}
int *CPSTDriverInterface::GetAllCnlVar(char *szProtVarName)
{
    return 0;
}


//////////////////////////////////////////////////////////////////////
// In the EXE

class __declspec(dllimport) CPSTDriverInterface
{
public:
static short GetCnlVarsCount();
static int *GetAllCnlVar(short var_rank);
static int *GetAllCnlVar(char *szProtVarName);
};

int _tmain()
{
    short NumOfVars = CPSTDriverInterface::GetCnlVarsCount();
    return 0;
}

Mark Salsbery
Microsoft MVP - Visual C++

static BOOL CALLBACK PrintDialog( HWND hDlg , UINT message , WPARAM wParam , LPARAM lParam)<br />
{<br />
	switch(message)<br />
	{<br />
		case WM_INITDIALOG:<br />
			return TRUE;<br />
		case WM_COMMAND:<br />
			switch (LOWORD (wParam))<br />
			{<br />
				case IDOK:<br />
				case IDCANCEL:<br />
					EndDialog(hDlg, 0);<br />
					return TRUE;<br />
			}<br />
	}<br />
}<br />

case BTN_PRINT:<br />
	      CreateDialog(hInst, MAKEINTRESOURCE(IDD_PRINT), NULL, (DLGPROC) PrintDialog);<br />
<br />

static <font color="Red">INT_PTR</font> CALLBACK PrintDialog( HWND hDlg , UINT message , WPARAM wParam , LPARAM lParam)
{
    switch(message)
    {
    case WM_INITDIALOG:
        return TRUE;
    case WM_COMMAND:
        switch (LOWORD (wParam))
        {
            case IDOK:
            case IDCANCEL:
                EndDialog(hDlg, 0);
                return TRUE;
        }
    }

    <font color="Red">return FALSE;</font>
}

Mark Salsbery
Microsoft MVP - Visual C++

/* Wedit generated resource file */<br />
#ifdef __LCC__<br />
#include <windows.h><br />
#endif<br />
#include "obdiiv3res.h"<br />
<br />
<br />
IDD_MAINDIALOG DIALOG 99, 8, 517, 292<br />
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU<br />
CAPTION "OBDII v3.0a"<br />
FONT 10, "MS Sans Serif"<br />
BEGIN<br />
    PUSHBUTTON      "Print PID data", BTN_PRINT, 188, 255, 60, 20<br />
    CTEXT           "", MSG_BAUDRATE, 326, 255, 37, 12, SS_SUNKEN<br />
    LTEXT           "Baud rate", -1, 407, 195, 70, 9<br />
    COMBOBOX        CB_BAUDRATE, 407, 205, 69, 35, CBS_DROPDOWN | CBS_SORT | WS_VSCROLL | WS_TABSTOP<br />
    CONTROL         "", -1, "STATIC", SS_BLACKFRAME, 319, 144, 166, 33<br />
    CONTROL         "", -1, "STATIC", SS_BLACKFRAME, 17, 255, 158, 27<br />
    PUSHBUTTON      "Get DTC", BTN_GETCODE, 373, 20, 60, 20, WS_DISABLED<br />
    LTEXT           "Startup, PID messages and trouble code help will appear here", MSG_PIDSELECTION, 20, 260, 151, 17, NOT WS_GROUP<br />
    CONTROL         "", LV_PIDDATA, "syslistview32", 0x241 | WS_DISABLED | WS_BORDER, 17, 100, 277, 143<br />
    LISTBOX         LB_PIDSELECTION, 17, 20, 276, 71, WS_DISABLED | WS_VSCROLL | WS_TABSTOP<br />
    LTEXT           "Communication messages will be posted here.", MSG_COMMUNICATION, 324, 148, 155, 23, NOT WS_GROUP<br />
    LTEXT           "Send data", LBL_SENDDATA, 318, 65, 75, 9<br />
    COMBOBOX        CB_COMPORT, 326, 205, 71, 35, CBS_DROPDOWNLIST | CBS_SORT | WS_VSCROLL | WS_TABSTOP<br />
    CTEXT           "", IND_ONLINE, 410, 255, 65, 12, SS_SUNKEN<br />
    DEFPUSHBUTTON   "Go online...", BTN_GOONLINE, 326, 230, 71, 14<br />
    GROUPBOX        "COM Settings", CRP_COMSETTINGS, 318, 181, 169, 91<br />
    COMBOBOX        CB_DEVICE, 318, 123, 70, 35, CBS_DROPDOWN | CBS_SORT | WS_DISABLED | WS_VSCROLL | WS_TABSTOP<br />
    PUSHBUTTON      "Send data", BTN_SENDDATA, 422, 123, 63, 14, WS_DISABLED<br />
    EDITTEXT        EB_RECEIVEDDATA, 318, 100, 169, 12, ES_AUTOHSCROLL | ES_READONLY<br />
    EDITTEXT        EB_SENDDATA, 318, 75, 170, 12, ES_AUTOHSCROLL | WS_DISABLED<br />
    GROUPBOX        "Communication", GRP_COMMUNICATION, 308, 50, 190, 235<br />
    PUSHBUTTON      "Get PID Data", BTN_GETPIDDATA, 308, 20, 60, 20, WS_DISABLED<br />
    PUSHBUTTON      "Cancel", IDCANCEL, 438, 20, 60, 20<br />
    LTEXT           "Received data", TL_RECEIVEDDATA, 318, 90, 75, 9<br />
    LTEXT           "Device selection", TL_DEVICE, 318, 114, 75, 9<br />
    LTEXT           "COM Port", TL_COMPORT, 326, 195, 70, 9<br />
    LTEXT           "PID Selection", TL_PIDSELECTION, 18, 10, 75, 9<br />
    LTEXT           "PID data", TL_PIDDATA, 17, 90, 75, 9<br />
    CTEXT           "", MSG_PARITY, 365, 255, 12, 12, SS_SUNKEN<br />
    CTEXT           "", MSG_STOPBITS, 393, 255, 15, 12, SS_SUNKEN<br />
    CTEXT           "", MSG_BYTESIZE, 379, 255, 12, 12, SS_SUNKEN<br />
END<br />
<br />
IDD_PRINT DIALOG 113, 7, 490, 292<br />
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU <br />
CAPTION "Print Report"<br />
FONT 10, "MS Sans Serif"<br />
BEGIN<br />
    PUSHBUTTON      "Cancel", IDCANCEL, 12, 243, 40, 14<br />
    CONTROL         "", REPORT, "STATIC", SS_WHITERECT, 12, 12, 465, 226<br />
END<br />
OBDII_ICON ICON "c:\\lcc-win32\\projects\\obdiiv3\\obdii.ico"<br />

<font color="Red">INT_PTR</font> CALLBACK PrintDialog( HWND hDlg , UINT message , WPARAM wParam , LPARAM lParam)
{
    switch(message)
    {
    case WM_INITDIALOG:
        return TRUE;
    case WM_COMMAND:
        switch (LOWORD (wParam))
        {
            case IDOK:
            case IDCANCEL:
                <font color="Red">DestroyWindow(hDlg);</font>
                return TRUE;
        }
    }

    <font color="Red">return FALSE;</font>
}


...

    ::CreateDialog(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDD_PRINT), NULL, PrintDialog);

Mark Salsbery
Microsoft MVP - Visual C++