Hi all
I am new to this mailling list, so bear with me if this is a FAQ (I have
googled my *** off before coming here).
First some environment info: Latest version of Mac OS X, Mono, MonoDevelop
and MonoTouch.
I am trying to use VSBarcodeReader and this is how far I got:
In one of their header-files we have:
@interface VSBarcodeReader : NSObject {
}
@property (assign) BOOL decodeEAN8;
@property (assign) BOOL decodeUPCE;
-(id) init;
-(void) reset;
-(BOOL) readFromImage:(CGImageRef)img readHeight:(int)readHeight
from:(int*)left to:(int*)right digits:(int*)res;
-(BOOL) readFromImageBuffer:(CVImageBufferRef)img
readHeight:(float)readHeight from:(float*)left to:(float*)right
digits:(int*)res;
@end
So I created VSBarcodeReader.cs:
[BaseType (typeof (NSObject))]
interface VSBarcodeReader {
[Export ("decodeEAN8", ArgumentSemantic.Assign)]
bool DecodeEAN8 { get; set; }
[Export ("decodeUPCE", ArgumentSemantic.Assign)]
bool DecodeUPCE { get; set; }
}
I compiled the dll with:
btouch -e out:VSBarcodeReader.dll VSBarcodeReader.cs
I link it all with:
-v -gcc_flags="-L${ProjectDir} -lsqlite3.0 -framework CoreVideo -framework
CoreMedia -lVSBarcodeReader -Objc"
I am able to load/run my app, but when I try to access the static lib by
writing:
VSBarcodeReader reader = new VSBarcodeReader();
reader.DecodeEAN8 = true;
It crashes. I have tried using btouch differently, linking in other ways and
so on, but no luck.
I have checked that libVSBarcodeReader.dll is NON-thumb.
I got a lille info from the crash:
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 app 0x011ad2e8 mono_error_init (mono-error.c:54)
1 app 0x010f3068 mono_method_signature_checked
(loader.c:2209)
2 app 0x010f3830 mono_method_signature
(loader.c:2354)
3 app 0x01036004 mono_jit_runtime_invoke
(mini.c:5713)
4 app 0x0113e7ac mono_runtime_invoke
(object.c:2756)
5 app 0x011e7bcc monotouch_trampoline
(monotouch-glue.m:652)
6 app 0x00ef5e80
wrapper_managed_to_native_MonoTouch_ObjCRuntime_Messaging_bool_objc_msgSend_intptr_intptr
+ 60
7 app 0x00b8ad28
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
+ 192
8 app 0x01036270 mono_jit_runtime_invoke
(mini.c:5746)
9 app 0x0113e7ac mono_runtime_invoke
(object.c:2756)
10 app 0x011e7bcc monotouch_trampoline
(monotouch-glue.m:652)
Any ideas?
Best regards
db
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