Hi.
I am attempt to use btouch to bind to an obj-c library that needs to pass
data back and forth via structs.
Ultimately I want to bind to the Wahoo Fitness ANT+ API they have but have
built a test library just to ensure I get the mapping concepts working
before I attempt to bind to the real library.
Now I can bind everything I need with the exception of the struct. I have a
separate file with the struct definition and have tried to include the
struct in the mappingFile itself. The struct is named Stuff and the error I
get is : error CS0246: The type or namespace name `Stuff' could not be
found. Are you missing a using directive or an assembly reference?
now the interesting part is if I leave the struct in the mapping file and
include the separate struct file I get this error : Stuff.cs(7,23): error
CS0101: The namespace `TestOne' already contains a definition for `Stuff'
So it appears to see the struct yet it wont let me bind anything with it.
Do I need to annotate the struct in some way for it to be used in btouch?
If I comment out the parts that use the struct the everything else works as
expected.
The command line I am using when the struct tis defined in the mapping file
is
/Developer/MonoTouch/usr/bin/btouch libTestLib.cs
and when I have the struct in a separate file i use:
/Developer/MonoTouch/usr/bin/btouch libTestLib.cs -s:Stuff.cs
Any help would be greatly appreciated.
Thanks,
Walt
Below are the files in question :
I have created a Obj-C Lib with the following header :
#import <Foundation/Foundation.h>
--begin heder
typedef unsigned char UCHAR;
typedef struct
{
UCHAR messageSize;
UCHAR messageId;
UCHAR data1;
UCHAR data2;
} Stuff;
@protocol StructDelegate
- (void)processStruct:(Stuff)antMessage;
@end
@protocol SimpleDelegate
- (NSString*)process:(NSString*)msg;
@end
@interface TestLib : NSObject
{
id <StructDelegate> del;
id<SimpleDelegate> sDel;
}
- (NSString *) RepeatAfterMe:(NSString*) repeatMe;
- (NSString*) SayHello;
- (int) HardCodedValue;
- (NSString*) Send:(Stuff) s;
+ (NSString*) classMethod;
- (void) save:(id <StructDelegate>) d;
- (void) saveSimple:(id <SimpleDelegate>) d;
- (NSString*) callSimple:(NSString*) s;
@end
-- end header
and I have a mapping file for bTouch as :
-- begin mapping file (libTestLib.cs)
using System;
using MonoTouch.Foundation;
using System.Runtime.InteropServices;
using MonoTouch.ObjCRuntime;
namespace TestOne
{
[BaseType (typeof(NSObject))]
[Model]
interface StructDelegate
{
[Export ("processStruct:")]
string processStruct (Stuff s);
}
[BaseType (typeof(NSObject))]
[Model]
interface SimpleDelegate
{
[Export ("process:")]
string process (string s);
}
[BaseType (typeof (NSObject))]
interface TestLib {
[Export ("RepeatAfterMe:")]
string RepeatAfterMe (string repeatMe);
[Export ("SayHello")]
string SayHello { get; }
[Export ("HardCodedValue")]
int HardCodedValue { get; }
[Static, Export ("classMethod")]
string ClassMethod { get; }
[Export("saveSimple:")]
void SaveSimple(SimpleDelegate del);
[Export("callSimple:")]
string CallSimple (string s);
[Export ("save:")]
void Save(StructDelegate d);
[Export ("Send:")]
string Send (Stuff s);
}
/*
[StructLayout(LayoutKind.Sequential)]
[Serializable]
public struct Stuff
{
public byte messageSize;
public byte messageId;
public byte data1;
public byte data2;
}
*/
}
-- end mapping file
and I have a file for the struct that I pass in defined as :
-- begin struct file (Stuff.cs)
using System;
namespace TestOne
{
//[StructLayout(LayoutKind.Sequential)]
[Serializable ]
public struct Stuff
{
public byte messageSize;
public byte messageId;
public byte data1;
public byte data2;
}
}
-end struct file
--
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