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Urgent:Convert C++ Function Pointer to VB.Net

To all gurus,

I am currently converting some of C++ codes to VB.net

The C++ Codes is as follows :

================= C++ CODE ==================
typedef struct _tagBBCameraParameter
unsigned int preview_width;
unsigned int preview_height;
unsigned int preview_x;
unsigned int preview_y;
unsigned int preview_format;
unsigned int preview_zoom;

const TCHAR* capture_file_name;

unsigned int contrast;
unsigned int saturation;
unsigned int brightness;

} BBCameraParameter;


BBAPI DWORD WINAPI BBCameraPreviewStart(HBBCAMERA, BBCameraParameter*);

================= END C++ CODE ==================

I managed to convert most of the codes to VB.Net but when I try to fun BBCameraPreviewStart function, it gives error.

'=================Partial VB.Net Code

Public Shared Function BBCameraPreviewStart(ByVal HBBCamera As IntPtr, ByRef BBParam1 As BBCameraParameter) As Integer
End Function

Public Shared Function BBCameraPreviewStop(ByVal HBBCamera As IntPtr) As Integer
End Function


This is how i pass the parameters;

Dim BBParam as BBCameraParameter '// already declared but not shown here
Dim HBBCamera as IntPtr '//Handle

'I have no problems getting handle but once i set the parameters for BBParam and pass as follows, i get error (not much help from the message).

BBCameraPreviewStart(HBBCAMERA, BBParam)

How do I call function BBCameraPreviewStart correctly? Did i do it correctly?

Please advices.
Mar 14 '07 #1
0 1150

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