To Whom It May Concern...

Ah, to end from that wearisome nomadic feeling. What a trip. I'm here in my new office, coffee brewing in the kitchen, cable running up the hall from my bedroom to said office so that my cable modem can connect. Why? Well, after 4 visits, a signed letter from my landlord, and me finally taking a hammer drill to the wall, I still don't have a jack in the wall of my office. I can't go into the cable company's lock box, and they can't do it without a work order. Oh the red tape. How about the move itself? Well, Friday was an adventure of stairs and stacking... won't go any more into that. Saturday, got started 45 minutes later than we wanted, but ended up down here 4 hours later. Multiple stops to tie down the tarp on my fathers truck in a fruitless effort. Plus one 2 1/2 hour diversion in Lords Valley PA, to replace the tire on the moving truck. A nice big spike, screw with a hex head, got lodged in the front right tire. Happily, there was a guy 1/2 mile down t...

I guess I forgot to post it, in all the hustle and the bustle. I finished the project, or at least the portion I needed to. I was able to handle events from the Kodak 14n and copy the file to the hard drive. Now adays, everything is WIA, TWAIN, or mass storage device. Kodak makes it hard. Oh well, it works. I have to wrap up some stuff, and then incorporate it into Data.Match, but I'm glad it's done. Check out this long Channel9 post .

Today, Friday the 24th we loaded the truck. Other than having my bro almost drop a couch on me, we're doing ok. We cleaned the apartment, went out to eat with my folks, and tomorrow we'll all head down to PA. I'm blogging from my parents where my wife and I will be staying. Boy I'm tired. Got a 6 hour drive, and unloading. At least it's 1st floor, not 2nd like the one we emptied today. Guess I should check my e-mail.

I'm sure many people can't wait for me to pack up and move to PA, specifically those on the forums I've been harassing. But my project is almost done. My code recieves events from the unmanaged code, once. After that, the unmanaged code seems to hang. However, when my code closes and get's GC'd, I get errors from the unmanaged code that it can't "Read" from memory. One error message for every event that should have fired. On the lighter side, I thought I'd post something for all those who think it's wise to teach your kids to lie from an early age. 'It's only a little lie.' Christmas Trivia 1. The average American takes six months to pay off holiday credit-card bills. 2. What is Pogonophobia: The fear of beards. 3. There are currently 78 people named S. Claus living in the U.S. -- and one Kriss Kringle. (But many Krispe Kremes) 4. December is the most popular month for nose jobs. 5. Weight of Santa's slei...

This is the last step I need to complete before I leave. I just need to catch the events. Now I don't get an exception, but I know the events have to be firing. Why doesn't the unmanaged code fire my code!!! Am I passing the wrong thing?!?! Help please! Check out the details here.

I'm posting everything I've got for this project. Here's the link . Please, please, please, I have one last part, and 2 days to do it. You can look at the last post on this blog to see what I'm having problems with.

I finally got images off this stupid Kodak camera. Only 1 task left, but I'll let you see what I've done so far. 'Get a handle to the directory myStatus = Me.KAllocDirItemByPath(myCameraRef, myFolder, myDir) 'Allocate a direcotry iterator for that folder If myStatus = 0 Then myStatus = Me.KAllocDirectoryIter(myDir, myDirIter) 'Iterate to the next directory item myStatus = Me.KIteratorNext(myDirIter, myDirItem) Do Until myStatus 0 ... Loop I set it up this way. You have to get a handle to directory, passing in a string for the path name. (ie. "Camera\Card1\DCIM\FolderName\") Then you get an iterator, and walk the iterator for the different files. In my loop I have this code: 'Create a handle to the source file myStatus = Me.KAllocIORef(myDirItem, mySrcIO) 'Create the handle to the file. The handle is a fileStream(fStream).handle fStream = New IO.FileStre...

// Pointer to tranfser buffer unsigned char* theBuffer = NULL; In .Net (Visual Basic) how do I do that?

To MSDN . You can reply here, there, or e-mail. I'm also going to go through old posts, and clean up the code so it's a little more readable.

Okay, so I'm able to pass strings out now. ByRef/ByVal... stupid fat fingers. My next step is to convert this function into VB: (I will be working on it tomorrow. GENERICREAD?!?!) KPDCStatus CreateDestinationFile( KPDCProcsPtr pProcs, KPDCLibMgrRef libMgr, char* fileName, KPDCFileRefHandle* fileRef) { KPDCStatus theStatus = KPDC_OK; char theFilePath[MAX_STRING_LENGTH]; KPDCUInt32 theAttributeSize = 0; HANDLE theFileHandle = INVALID_HANDLE_VALUE; // // Set up the file path // strcpy(theFilePath, "C:\\"); strcat(theFilePath, fileName); // // Create the file // theFileHandle = CreateFile( theFilePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NUL...

Okay, the big issue I was having was that my functions would end an an unhandled exceptrion would occure. I figured out that the IntPtrs I was passing to the unmanaged code were getting GC'd when my function ended. But the unmanaged code was still trying to use it. So I made the IntPtrs global, an it worked. Here's the new one. I posted on MSDN. I need to deal with events. I don't know what events the DLL raises, but it has a method where you can pass your function to the unmanaged code. The function definition looks like this: KPDCStatus KPDCSetCameraEventNotification ( KPDCCameraRef inCameraRef, KPDCCameraEventNotificationFunc inNotificationFunc, void *inUserData); In the demo code, they provide a typedef that looks like this: typedef void (KPDCCALLBACK *KPDCCameraEventNotificationFunc)( KPDCUInt32 inEvent, // The event code, see KPDCCameraEvents KPDCUInt32 inParam1, // Events may have an integer parameter ...

I've gotten my software to snap the camera, taking a picture. Now I have to refactor the code, cleaning it up, and putting necessary funcionality into the wrapper as opposed to my test code. I also need to handle events given out by the unmanaged DLL. I also have pics of my apartment .

Woa, this is a breakthrough for me. Check out this article on MSDN. Some Marshaling examples. I'm gonna print these out I think.

Anybody? In my last post I posted native function declarations, and what I did to wrap them. I used a bunch of IntPtrs. I'm thinking, after some reading and followups on newsgroups, that I should be using HandeRefs, at least some of the time. Do you have any examples? (ie. Iterators, Strings, Ints, etc.) When should you use HandleRefs, as opposed to IntPtrs?

So, I have C++ function declarations, and their VB wrappers. Anybody see anything wrong with them? TypeDefs in demo C++ code: typedef void* KPDCOpaqueRef; typedef KPDCOpaqueRef KPDCLibMgrRef; typedef KPDCOpaqueRef KPDCIteratorRef; typedef KPDCIteratorRef KPDCCameraIterRef; typedef KPDCOpaqueRef KPDCCameraRef; typedef KPDCIteratorRef KPDCPropertyIterRef; typedef KPDCOpaqueRef KPDCPropertyRef; typedef KPDCIteratorRef KPDCDirectoryIterRef; typedef KPDCOpaqueRef KPDCDirItemRef; typedef KPDCOpaqueRef KPDCIORef; typedef KPDCOpaqueRef KPDCImageRef; Native Def: //Get the size and type for the specified attribute ID.// KPDCStatus KPDCGetAttributeInfo(KPDCOpaqueRef inRef, KPDCAttributeID inAttrID, KPDCDataTypes *outAttrType, KPDCUInt32 *outAttrSize); My wrap: Declare Auto Function KGetAttributeInfo Lib "DCSPro4SLR.dll" Alias "KPDCGetAttributeInfo" (ByVal inRef As IntPtr, ByVal inAttrID As Integer, ByRef outAttrType As K...

I have a button that calls an unmanaged function looking at the properties in the camera. I'm getting a NullReferenceException AFTER the function runs in system.windows.forms.dll. I declare a bunch of IntPtrs at the begining of my class that are all Private. (The .Dispose method calls a function called FlushIt, that calls an unmanaged function to clear those IntPtrs.) Here's the function. Remember, it's after this that I get my errors. But something here probably isn't getting cleared correctly. The function calls unmanaged code to walk an iterator which was created by unmanaged code. I've also included the Private Declarations of the IntPtrs. 'myPro4' is the managed wrapper to the unmanaged DLL. 'References, IntPtrs, for each one of these you must 'Add a FreeRef command in FlushIt Private myLibMgr As IntPtr = Marshal.AllocHGlobal(1) Private myCamIter As IntPtr = Marshal.AllocHGlobal(1) Private myDirItemRef As IntPtr = Marshal.Al...

Kodak's Digital Camera System SDK can be found here .

I am developing a .Net wrapper for Kodak's Digital Camera System SDKs. These are basically the DLLs for handling Kodak's Pro cameras, like the 14n. The documentation is good, but in C++. So the stuff I want to do I need to convert to VB .Net, cause that's what I know. (Tho I'm getting a crash course in C++.) Issue #1 (BIG ISSUE) StackOverflowException This occurs when the following code runs: Private Sub btnTest1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTest1.Click Call FillCameras() End Sub Now, the first thing you'll say is, 'FillCameras is your problem. Something in there.' And you may be right, but the weird thing is, if I put a breakpoint at that line (with Issue #2 I get StackOverflowExceptions at other times. Is there a way to know why? The code seems to go fine. I go through a number of things, firing functions I've wrapped, and getting somewhat expected results. But when my function ends, ...

I'm posting more items to my e-bay auctions. Please take a look. I have some electronics, as well as some Dolls that will be going up.

Famous Atheist, Antony Flew, at age 81 has announced he now believes in a god ... of some sort. At age 81, after decades of insisting belief is a mistake, Antony Flew has concluded that some sort of intelligence or first cause must have created the universe. A super-intelligence is the only good explanation for the origin of life and the complexity of nature, Flew said in a telephone interview from England. The derivatives that Catholicism/Protestantism have portrayed of god have lost so much of the god of the bible, it's no wonder people can't put their faith in it. But also, people are finding it harder to swallow evolution as the supreme source of life. If people dig a little deeper , they'll find the answers.

What may seem glaringly obvious, or extremely exciting, probably won’t do much for me. Learning how to write a text file? Now that was exciting. But as I learn and grow in this competitive and fast moving environment I look over things that are now old news and WOW! It all comes clear. .Net was where I started. So it was hard for me to see how wonderful it made life. As I try to wrap an unmanaged library the beauty of .Net screams out. Metadata!!! If I need to consume a .Net based Web Service, Metadata tells me all about the functions, properties and other goodies I need to consume it. If I need to use functionality in a managed library, Metadata makes Intellisense possible. If I want to access an unmanaged library, it’s locked up tighter than Fort Knox. There is nothing to tell me the names of the functions, let alone their signatures. I don’t know what it does or what I can use it for unless I troll through documentation or find source code that uses it. I guess I’ve h...

But this is a real interesting article . I specifically noted this paragraph: Since the time of Adam Smith, we've used the wealth of nations as a proxy for the well-being of nations. We measure whether life is getting better by checking whether the good numbers (GDP, personal incomes, and so on) are going up and the bad numbers (unemployment, inflation, and so on) are going down. However, over the past half century, something strange has happened. The US's per capita GDP - the value of all the goods and services a nation produces divided by its population - has nearly tripled, but American well-being hasn't budged. We've grown almost three times richer but not one jot happier. There's ample evidence that in all postindustrial societies, material wealth and broader happiness are no longer closely in sync. So more money isn't more happiness? But that seems to be the only focus of the world, to make more money.

Yes, we did it. Yesterday, my simple little site had it's 1,500th visit. Maybe that's not much, but it's good to remember those milestones. As for tech, I should be getting a fire-wire card today at work, so I can test out tethered operation. Also, I was offered this site as a reference for NUnit with VB. I've read it over briefly, and it's worthy of posting about. I'm going to work through the practice exercise ASAP. My buddies, Dan and Jerry got back from Germany. Their pics are up if you know them and care to look. Dan's weblog is listed under my 'Friend Links' section.

I've looked up the local INETA associated .Net users group, Central Penn .Net . Figured it's be good to have local coders in my network of contacts.

I've made some additions to my Clive Cussler book page. You can now order any of the books listed there. Please do, they're very good.

Update: I changed a question to a statement. I will be moving! I guess I can tell you now, everybody else that needs to know first knows. My wife and I will be moving to the Lebanon, PA area at the end of December! What does this mean for my weblog? Not much, there might be a gap in posting, but hopefully not much. What does this mean about the current project, Wrapping an unmanaged DLL? I would like to finish that. I don't think it will take too much more. They've written the hard code, I'm just wrapping it. Anybody know anyone down that area looking for somebody to work for them? Let me know. I've tried to line up a job, but I've only gotten some nibbles.

The software I developed for my company, has performed well for our customers, causing them to choose it over offerings by Kodak (Groups) and PhotoLynx (SPS). The one shortcoming, photographers want the software tethered to the camera. That is, when the camera takes a picture, it is imediatly in the software, ready to be flagged with the student's information. Well, Kodak does offer an SDK. It consists of 3 libraries (DLLs) and some sample code. The code is in C++ and was written using Visual Studio 6.0. My mission, that I've seemed to have accepted, is to write a managed code wrapper, using Visual Basic .Net, so that my software can consume and tether to the Kodak cameras. Right now, I am at a standstill. I believe I have written code that will initialize and talk to the camera, but I don't have the cable to connect the camera to the PC for testing. So right now I get error codes from the .DLLs saying they can't initialize, which makes sense. But I also get this:...

I put another link on my sidebar here, but it's a link to a page of links. I am going to start saving useful programming links to this page so that others can benefit from them. As I get more I will sort them out, but this is a start. I have many to put there, but these are some good ones. Also, I will be putting some REALLY BIG NEWS here soon, so keep watching. (No, we're not having a kid.)

It seems there is much in life and in programming I do not understand. I have this code: typedef KPDCUInt8* KPDCPointer; typedef enum { KPDCRed = 0, // Currently, RGB is all we got. KPDCGreen = 1, KPDCBlue = 2, KPDCMaxNumComponents = 8 // The maximum number of components conceivable. } KPDCColorComponents; typedef struct { KPDCPointer componentPtr[KPDCMaxNumComponents]; // Array of pointers to the components, // indexed by KPDCColorComponents. } KPDCPixelLayout; typedef enum { KPDC_CameraModelUnknown = 0, KPDC_ProBackCamera = 0x4000, KPDC_ProBack645 = 0x4001, KPDCModelCodes_end } KPDCModelCodes; I want to do the same thing in VB .Net. I know how to do structures and enumerators. What I don't know is what to do about the pointer, and then what to do about the last enum mentioned (KPDCModelCodes). How ...

There's something I'm learning. There's water, and there's beer. You might have soda, or maybe fruit juice. But when it comes to most consumed, it's water or beer. Programmers, geeks, and techies are big fans of beers. Take a look at my friend's site . This is a page on his site talking about some of his beer tours. The first one on the page is the New England area. I must say, however, if he comes through again, he may want to take a look at Long Trail. I am wondering at his opinion. He does mention a good Black and Tan recipe. I hope to some day soon have the room and time to invest in brewing at home. Knowing several 'home brewers' has given me a desire to try it myself. That, and the fact that on a Sunday night, with nothing to do, and no 'cold ones' in my fridge, I cannot run to the store to purchase beer. Thanks Connecticut.

I set up an FTP site at home last night. Tried to button it up tight. It's nice, I was able to send files from work right to my home PC. Maybe I'll get it set up so I can edit my home site when I'm away. I'll see. It's just nice to have the flexibility.

I'm trying to write a managed code wrapper for some libraries written in VC++ 6. I have sample code, also written in C++. I'm a bit rusty on C++, so I dusted off a few of my books, to try to learn a bit more about this language. What I put here is for anybody's benefit, but mostly for my own memory. I started seeing function declarations like this: void myFunction(int varA, void *varB) What's this *varB? Well, in VB.Net, it's passing the variable 'by reference'. You'ld do it like so: myFunction(ByVal varA As Integer, ByRef varB As Object) In C++ this is called indirection, and varB would be called a pointer. C++ can use this to access stuff off the heap, as opposed to the stack. Whoa!!! What are you talking about now!?!? More fun stuff I learned. The term stack refers to the area of memory allocated to your program. The term heap refers to the computer's virtual memory. Stack is like inside your sandbox, all alone, safe and sound....

Found this, thanks to David Browne on MSDN newsgroups. (Aren't VB guys nicer already?) The article on MSDN is here . Basically I have this .dll that provides certain functionality I want. How do I use it? Well... this article tells me how. I will now continue to read and learn? Hope this post helps you find what you need.

The people. The C++ people seem mean. Maybe I'm biased, I've only received replies from 1 guy. But hey, if the others are so nice, why don't they help. I downloaded some C++ stuff (Visual C++ 6.0) and converted it to 2003. I go in and try to compile... Files are all over the place, nowhere to be found. So I have to go through all the includes, specify the paths... Then I compile again. LINK : fatal error LNK1181: cannot open input file '.\debug\KPDCLoader_Win.obj' Hmm... Okay, it can't find that file. I can't find it either. Well, it's a Linker error, maybe there's a problem linking some files, the paths were all messed up. So, I hit F1, and get this: cannot open input file 'filename' The linker could not find filename because it does not exist or the path was not found. A lot of help that was. So I go on to MSDN's newsgroups. I don't know any sites, or tutorials, all my C++ books are at home, maybe I'd find ...