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QuestionHow to pass an array or structs to DeviceIoControl when using pinvoke Pin
BobZscharnagk7-Mar-21 22:13
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AnswerRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
Randor 8-Mar-21 11:50
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
Randor 9-Mar-21 10:24
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
Randor 10-Mar-21 16:54
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
BobZscharnagk10-Mar-21 19:30
MemberBobZscharnagk10-Mar-21 19:30 
Radnor,

Thanks for the reply and the time. When I tried your code, unmodified, i just get 64 lines of "0 offset, length = 0", which is because I think you didn't copy the Marshall'd response back into the passed response. I added two lines to your code...

f.SetLength(10240);

f.Write(new byte[] { (byte)'H', (byte)'e', (byte)'l', (byte)'l', (byte)'o' }, 0, 5);  //Added by Bob


and

int error = Marshal.GetLastWin32Error();

Marshal.PtrToStructure(lpOutBuffer, response);  //Added by Bob


Adding f.Write by itself should cause one of the blocks to be allocated and not show in the output. Testing with just this line gives the same result as if the write wasn't there.

Adding the second change, Marshal.PtrToStructure, causes an error "
Quote:
System.ArgumentException: 'The specified structure must be blittable or have layout information.


Which I think is where I started.
GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
BobZscharnagk10-Mar-21 22:40
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GeneralRe: How to pass an array or structs to DeviceIoControl when using pinvoke Pin
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QuestionUser Control Pin
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QuestionHow to take JSON POST data and covert it to something i can work with Pin
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