hilfe mit dll

/////////////////////////////////////////////////////////////////
// example how to load and work with the "USB IR Remote Receiver"
// this example is written with Visual Studio 2008
// (c) by Portisch 2010
/////////////////////////////////////////////////////////////////


#include <windows.h>
#include <stdio.h>


// DLL Version
typedef char* (__stdcall *impVersion)(void);
// DLL Copyright
typedef char* (__stdcall *impCopyright)(void);
// DLL PluginName
typedef char* (__stdcall *impPluginName)(void);


// DLL Option dialog
typedef void (__stdcall *impShowSettings)(HWND);


// native IR Data by PAnsiChar
typedef void CALLBACK CallBackPAnsiChar(char*, char*, char*, char*);
typedef int (__stdcall *impInitPAnsiChar)(CallBackPAnsiChar);


typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;


// native IR Data init
#pragma pack(1) // set pack alignment to 1 padding byte
typedef struct
{
BYTE Protocol;
WORD Address;
WORD Command;
BYTE Flags;
} IRMP_DATA;
#pragma pack() // default alignment


typedef void CALLBACK CallBackIRData(IRMP_DATA);
typedef int (__stdcall *impInitIRData)(CallBackIRData);


CALLBACK MyCallBackPAnsiChar(char* Protocol, char* Address, char* Command, char* Flags)
{
printf("\nIR Data received: Protocol: %s, Address: 0x%s, Command: 0x%s, Flags: 0x%s", Protocol, Address, Command, Flags);
}


CALLBACK MyCallBackIRData(IRMP_DATA ir_code)
{
printf("\nIR Data received1: Protocol: 0xX, Address: 0xX, Command: 0xX, Flags: 0xX", ir_code.Protocol, ir_code.Address, ir_code.Command, ir_code.Flags);
}
 
int main(int argc, char **argv)
{
impVersion Version = NULL;
impCopyright Copyright = NULL;
impPluginName PluginName = NULL;
impInitPAnsiChar InitPAnsiChar = NULL;
impInitIRData InitNative = NULL;
impShowSettings ShowSettings = NULL;


char ch;
HWND hwnd;
char * Buffer;
 
// Load DLL file
HINSTANCE hinstLib = LoadLibrary(TEXT("USB_IR_Remote_Receiver.dll"));
if (hinstLib == NULL) {
printf("\nERROR: unable to load DLL\n");
return 1;
}


// Get function pointer PluginName
PluginName = (impPluginName)GetProcAddress(hinstLib, "PluginName");
if (PluginName == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}
 
// Get function pointer Version
Version = (impVersion)GetProcAddress(hinstLib, "Version");
if (Version == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}
 
// Get function pointer Copyright
Copyright = (impCopyright)GetProcAddress(hinstLib, "Copyright");
if (Copyright == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}


// Get function pointer ShowSettings
ShowSettings = (impShowSettings)GetProcAddress(hinstLib, "ShowSettings");
if (ShowSettings == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}


// Call function.
Buffer = PluginName();
// Display result
printf("\nThe DLL PluginName is: %s\n", Buffer);


// Call function.
Buffer = Version();
// Display result
printf("\nThe DLL version is: %s\n", Buffer);


// Call function.
Buffer = Copyright();
// Display result
printf("\nThe DLL Copyright is: %s\n", Buffer);


printf("\nPlease define if DLL init by native IR Data or by PAnsiChar!");
printf("\nPress [1] for native IR Data");
printf("\nPress [2] for IR Data in PAnsiChar");
printf("\n\nPlease enter a command!");


ch = getch();
switch(ch)
{
case '1':
// Get function pointer InitNative
InitNative = (impInitPAnsiChar)GetProcAddress(hinstLib, "InitNative");
if (InitNative == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}


if (InitNative(*MyCallBackIRData))
{
printf("\nInit DLL with InitIRData successfull");
}
else
{
// Unload DLL file
FreeLibrary(hinstLib);
return 0;
}
break;
case '2':
// Get function pointer InitPAnsiChar
InitPAnsiChar = (impInitPAnsiChar)GetProcAddress(hinstLib, "InitPAnsiChar");
if (InitPAnsiChar == NULL) {
printf("\nERROR: unable to find DLL function\n");
FreeLibrary(hinstLib);
return 1;
}


if (InitPAnsiChar(*MyCallBackPAnsiChar))
{
printf("\nInit DLL with InitPAnsiChar successfull");
}
else
{
// Unload DLL file
FreeLibrary(hinstLib);
return 0;
}
break;
}


printf("\n\nPress [s] to show settings dialog");
printf("\nPress [x] to exit");
printf("\n\nPlease enter a command!");


// get hwnd from console window
hwnd = GetConsoleWindow();


// repeat until exit
while(1)
{
ch = getch();
switch(ch)
{
// show settings/options dialog of DLL
case 's':
//show settings dialog of DLL
ShowSettings(&hwnd);
break;
// exit program
case 'x':
if (InitNative != NULL)
InitNative(NULL);
if (InitPAnsiChar != NULL)
InitPAnsiChar(NULL);
// Unload DLL file
FreeLibrary(hinstLib);
return 0;
}
}
return 0;
}