Discussion :

[nachidel]

Bonjour à tous,

voila je suis actuellement en train d'écrire un programme qui me permettra de dialoguer avec un périphérique USB via une DLL.
Mais voila je rencontre quelques soucis : je n'arrive pas à utiliser la fonction RegisterDeviceNotification situer dans la dll user32.
Je code sous code::block avec mingw. je me suis servi pour écrire mon prog d'un autre programme (ecrit avec VC++) dont j'avais les sources. Je vous fourni le bout de code qui me pose problème

merci de votre aide

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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#define _WIN32_WINDOWS 0x0410
 
#include <iostream>
#include <windows.h>
#include <Dbt.h>
 
 
#define DeviceVID_PID "vid_04d8&pid_000c"
 
using namespace std;
 
typedef DWORD MPUSBGetDLLVersion(void);
typedef DWORD MPUSBGetDeviceCount(PCHAR pVID_PID);
typedef HANDLE MPUSBOpen(DWORD instance, PCHAR pVID_PID, PCHAR pEP, DWORD dwDir, DWORD dwReserved);
typedef BOOL MPUSBClose(HANDLE handle);
typedef DWORD MPUSBRead(HANDLE handle, PVOID pData, DWORD dwLen, PDWORD pLength, DWORD dwMilliseconds);
typedef DWORD MPUSBWrite(HANDLE handle, PVOID pData, DWORD dwLen, PDWORD pLength, DWORD dwMilliseconds);
typedef DWORD MPUSBReadInt(HANDLE handle, PVOID pData, DWORD dwLen, PDWORD pLength, DWORD dwMilliseconds);
typedef HDEVNOTIFY WINAPI RegisterDeviceNotificationUM(HANDLE hRecipient,LPVOID NotificationFilter,DWORD Flags);
 
 
int main()
{
    HINSTANCE dllCoupleur = LoadLibrary("mpusbapi.dll");
        MPUSBGetDLLVersion *versionDll = (MPUSBGetDLLVersion*) GetProcAddress(dllCoupleur,"_MPUSBGetDLLVersion");
        MPUSBGetDeviceCount *nombrePeripherique = (MPUSBGetDeviceCount*) GetProcAddress(dllCoupleur,"_MPUSBGetDeviceCount");
        MPUSBOpen *ouvrir = (MPUSBOpen*) GetProcAddress(dllCoupleur,"_MPUSBOpen");
        MPUSBClose *fermer = (MPUSBClose*) GetProcAddress(dllCoupleur,"_MPUSBClose");
        MPUSBRead *lire = (MPUSBRead*) GetProcAddress(dllCoupleur,"_MPUSBRead");
        MPUSBWrite *ecrire = (MPUSBWrite*) GetProcAddress(dllCoupleur,"_MPUSBWrite");
        MPUSBReadInt *lireInt = (MPUSBReadInt*) GetProcAddress(dllCoupleur,"_MPUSBReadInt");
 
 
 
   HINSTANCE dllAuthentification = LoadLibrary("user32.dll");
      RegisterDeviceNotificationUM *authentification = (RegisterDeviceNotificationUM*) GetProcAddress(dllAuthentification,"RegisterDeviceNotification");
 
 
    HANDLE  EP1INHandle = INVALID_HANDLE_VALUE;
	HANDLE  EP1OUTHandle = INVALID_HANDLE_VALUE;
	unsigned int ADCValue = 0;
	BOOL AttachedState = FALSE;
 
	GUID InterfaceClassGuid = {0xa5dcbf10, 0x6530, 0x11d2, 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED};
	//Register for WM_DEVICECHANGE notifications:
    DEV_BROADCAST_DEVICEINTERFACE MyDeviceBroadcastHeader;// = new DEV_BROADCAST_HDR;
    MyDeviceBroadcastHeader.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
    MyDeviceBroadcastHeader.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE);
    MyDeviceBroadcastHeader.dbcc_reserved = 0;	//Reserved says not to use...
    MyDeviceBroadcastHeader.dbcc_classguid = InterfaceClassGuid;
//**********ICI*****************
    authentification((HANDLE)this->Handle, &MyDeviceBroadcastHeader, 0x00000000);
    //*****************************************************************************
    //authentification((HANDLE)this->Handle,(LPVOID) &MyDeviceBroadcastHeader, 0x00000000);
			/*
			//Now perform an initial start up check of the device state (attached or not attached), since we would not have
			//received a WM_DEVICECHANGE notification.
			if(MPUSBGetDeviceCount(DeviceVID_PID))	//Check and make sure at least one device with matching VID/PID is attached
			{
				EP1OUTHandle = MPUSBOpen(0, DeviceVID_PID, "\\MCHP_EP1", MP_WRITE, 0);
				EP1INHandle = MPUSBOpen(0, DeviceVID_PID, "\\MCHP_EP1", MP_READ, 0);
 
				AttachedState = TRUE;
				StatusBox_txtbx->Text = "Device Found: AttachedState = TRUE";
				label2->Enabled = true;	//Make the label no longer greyed out
			}
			else	//Device must not be connected (or not programmed with correct firmware)
			{
				StatusBox_txtbx->Text = "Device Not Detected: Verify Connection/Correct Firmware";
				AttachedState = FALSE;
				label2->Enabled = false;	//Make the label greyed out
			}
 
 
*/
    if (versionDll != NULL )
    {
        cout << versionDll() << endl;
    }
 
    if (nombrePeripherique != NULL )
    {
        cout << nombrePeripherique(DeviceVID_PID) << endl;
    }
 
 
 
	return 0;
}

[Mac LAK]

Ce qui est assez normal : c'est RegisterDeviceNotification de façon générale, certes, mais via un chargement explicite, tu DOIS préciser si tu utilises la version ANSI ("RegisterDeviceNotificationA") ou la version Unicode ("RegisterDeviceNotificationW") comme deuxième paramètre du GetProcAddress.

De plus, en standard, ton type fonctionnel RegisterDeviceNotificationUM n'existe apparemment pas, j'espère donc que tu l'as bien défini correctement quelque part.