Error when compiling C code with CreateEvent call

I get several compile errors if I compile the following function in Visual Studio 2005:

void search()
{
    deviceEventHandle = CreateEvent(NULL, FALSE, FALSE, "foundDe开发者_运维百科vice");

    BTUINT32 deviceClass = 0; // 0 represents all classes 
    BTUINT16 maxDevices = 200; // 0 represents an unlimited number of responses
    BTUINT16 maxDuration = 45; // maxDuration * 1.28 = number of seconds
    Btsdk_StartDeviceDiscovery(deviceClass, maxDevices, maxDuration);

    WaitForSingleObject(deviceEventHandle, INFINITE);

    if (deviceEventHandle != NULL) {
        CloseHandle(deviceEventHandle);
        deviceEventHandle = NULL;
    }
}

These are the errors I get:

error C2275: 'BTUINT32' : illegal use of this type as an expression 
error C2146: syntax error : missing ';' before identifier 'deviceClass'     
error C2065: 'deviceClass' : undeclared identifier
error C2275: 'BTUINT16' : illegal use of this type as an expression     
error C2146: syntax error : missing ';' before identifier 'maxDevices'      
error C2065: 'maxDevices' : undeclared identifier   
error C2275: 'BTUINT16' : illegal use of this type as an expression     
error C2146: syntax error : missing ';' before identifier 'maxDuration'     
error C2065: 'maxDuration' : undeclared identifier  

If I comment out the line containing the CreateEvent call the code compiles without errors:

void search()
{
    //deviceEventHandle = CreateEvent(NULL, FALSE, FALSE, "foundDevice");

    BTUINT32 deviceClass = 0; // 0 represents all classes 
    BTUINT16 maxDevices = 200; // 0 represents an unlimited number of responses
    BTUINT16 maxDuration = 45; // maxDuration * 1.28 = number of seconds
    Btsdk_StartDeviceDiscovery(deviceClass, maxDevices, maxDuration);

    WaitForSingleObject(deviceEventHandle, INFINITE);

    if (deviceEventHandle != NULL) {
        CloseHandle(deviceEventHandle);
        deviceEventHandle = NULL;
    }


}

These are the headers I use:

#include <winsock2.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <conio.h>
#include "Btsdk_ui.h"

I compile the code as C code (/TC) in Visual Studio 2005. The "Btsdk_ui.h" file is part of the BlueSoleil bluetooth stack and inlcudes another file that contains definitions of BTUINT32 and BTUINT16.

All suggestions are welcome.

In C, you declare all your variables at the beginning of the block.

Move your deviceEventHandle = CreateEvent(NULL, FALSE, FALSE, "foundDevice"); to after your block of BTUINT variables.

When compiling C code, MSVC doesn't allow declarations to be mixed with statements - declarations can only be at the start of a block (MSVC follows more closely to the ANSI/ISO C90 standard than the C99 standard).

Try:

void search()
{

    BTUINT32 deviceClass = 0; // 0 represents all classes 
    BTUINT16 maxDevices = 200; // 0 represents an unlimited number of responses
    BTUINT16 maxDuration = 45; // maxDuration * 1.28 = number of seconds

    deviceEventHandle = CreateEvent(NULL, FALSE, FALSE, "foundDevice");

    Btsdk_StartDeviceDiscovery(deviceClass, maxDevices, maxDuration);

    WaitForSingleObject(deviceEventHandle, INFINITE);

    if (deviceEventHandle != NULL) {
        CloseHandle(deviceEventHandle);
        deviceEventHandle = NULL;
    }


}