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Re: draw a single point Stephane Rodriguez.27-Aug-02 1:11 Stephane Rodriguez. 27-Aug-02 1:11  I guess for known performance reasons MS didn't think that was a good idea to allow DrawPoint. Well to be honest, the fact that DrawLine(x,y,x,y) does not work properly is a bug. DirectX+GDI advocates have been fighting for years to train developers to lock a ptr to an actual surface, and then poking inside, instead of doing silly SetPixel loops. For real world apps such like real-time imaging, locking surfaces is of course the recommended solution, And I swallow a small raisin. Re: draw a single point Rüpel27-Aug-02 3:37 Rüpel 27-Aug-02 3:37  hmm. might be a reason. when i think it over, i could have created a bitmap before the operation, set the pixels within the bitmap and draw the bitmap at the proper location... i see there's a trade-off between 'amount of code' and 'drawing speed' - but in my simple case the setpixel-speed is abolutely ok. :wq Re: draw a single point Rüpel26-Aug-02 22:01 Rüpel 26-Aug-02 22:01  FillEllipse(,,,1,1) does not solve the problem going marshalled... :wq Re: draw a single point Rüpel26-Aug-02 22:06 Rüpel 26-Aug-02 22:06  MS recommends to use GDI (Marshalled) where do you know that from? how does someone get to know what MS recommends...? :wq Re: draw a single point Philip Fitzsimons23-Aug-02 4:21 Philip Fitzsimons 23-Aug-02 4:21  SetPixel "When the only tool you have is a hammer, a sore thumb you will have." Re: draw a single point Rüpel23-Aug-02 7:34 Rüpel 23-Aug-02 7:34  i don't want to draw on a bitmap but rather on a graphics-object :wq Exception in NEt application on W98 EdgarBM23-Aug-02 0:57 EdgarBM 23-Aug-02 0:57  Hi, I've developped a little application to communicate by serial ports in .NET. It uses Kernel32 API the same way the communication was done on VC++ 6.0. When I had finished it I copied it to a W98 computer with the .NET Framework already installed. The problem is that I get an exception just when I try to execute it and nothing works (neither the form is shown, only the error message). I tried it on another W2k and gets an exception on "unknown module" about a "invalid URL direction". Does anyone knows what's happening?, maybe I should make an installation project for it? Thanks in advance, EdgarBM Edgar Berengena Moreno Software Engineer Appeyron Research Re: Exception in NEt application on W98 David Stone23-Aug-02 6:56 David Stone 23-Aug-02 6:56  Is the program relying on a dll that isn't included in the .NET Framework? That could be the problem. David Stone It seemed similar to someone saying, "Would you like to meet my knife collection?" Ryan Johnston on Elaine's sig Re: Exception in NEt application on W98 EdgarBM25-Aug-02 21:44 EdgarBM 25-Aug-02 21:44  Hi, thank you for your reply. I'm using API "Kernel32" the functions: WriteFile ReadFile GetLastError CloseHandle CreateEvent SetCommTimeouts GetOverlappedResult WaitForSingleObject ...but I realized that if I execute the program locally (note remotelly) it executes, although it doesn't works fine because those functions doesn't work. Do you have any idea about it? Thank you again, Edgar Edgar Berengena Moreno Software Engineer Appeyron Research DirectX Philip Fitzsimons22-Aug-02 23:01 Philip Fitzsimons 22-Aug-02 23:01  anyone tried using directX from c#? I know that the next version will be .net compatible, but I am wondering if its been tried with the current version - maybe with the vb version of the directx lib? "When the only tool you have is a hammer, a sore thumb you will have." Re: DirectX Rüpel23-Aug-02 2:36 Rüpel 23-Aug-02 2:36  have a look at this article here on codeproject in the C#-section it's about writing a media-player in C# using DirectShow, and as far as i understood (never ever having written a single line of vb-code) it does use the vb-libs :wq .Net framework source code Stephane Rodriguez.22-Aug-02 22:36 Stephane Rodriguez. 22-Aug-02 22:36  Couldn't believe my eyes when I ran it the first time, but this program decompiles the whole .Net framework IL source code, And I swallow a small raisin. Re: .Net framework source code leppie23-Aug-02 3:26 leppie 23-Aug-02 3:26  Yes, its nice, but it does crash alot If u want some more source code, download the MONO source, also very helpfull especially when u want to extend .Net classes. MYrc : A .NET IRC client with C# Plugin Capabilities. See http://sourceforge.net/projects/myrc for more info. Re: .Net framework source code Stephane Rodriguez.23-Aug-02 4:00 Stephane Rodriguez. 23-Aug-02 4:00  I thought at first sight that Mono was really far from a user-friendly repository of .Net source code, but... While we are at it, let's check out Salamander. I hate their Java demo but their desktop app looks fine and powerful too. Within a few hours so many tools to hack down the closed code. I thought until this morning that switching from MFC to C# I was being ligotated by MS. Now no more. Let it begin! And I swallow a small raisin. Re: .Net framework source code James T. Johnson23-Aug-02 4:37 James T. Johnson 23-Aug-02 4:37  Amazing isn't it? To cover the places where it crashes, ildasm does the job nicely for me. James "And we are all men; apart from the females." - Colin Davies Re: .Net framework source code Stephane Rodriguez.23-Aug-02 4:40 Stephane Rodriguez. 23-Aug-02 4:40  Eh...eh.... Not a single crash for me. Used since 8 AM this morning (it is 16 PM). And I swallow a small raisin. Re: .Net framework source code James T. Johnson23-Aug-02 4:42 James T. Johnson 23-Aug-02 4:42  I've only found a few methods that crash it for me. One of the paint event methods seemed to do it, PaintWithErrorHandling in the Control class IIRC. James "And we are all men; apart from the females." - Colin Davies Re: .Net framework source code leppie23-Aug-02 5:01 leppie 23-Aug-02 5:01  maybe I just try to view the wrong stuff Try some dll's with a combination of unmanaged/managed code and it tends to crash on some functions. But I'll take James's sugestion and use IDLDASM MYrc : A .NET IRC client with C# Plugin Capabilities. See http://sourceforge.net/projects/myrc for more info. Re: .Net framework source code Stephane Rodriguez.23-Aug-02 5:49 Stephane Rodriguez. 23-Aug-02 5:49  Well huhaaaaa Crashed too! Will try recompile and debug Anaconda this WE or something. Will flag you if I get this bug down, And I swallow a small raisin. Re: .Net framework source code Stephane Rodriguez.24-Aug-02 6:59 Stephane Rodriguez. 24-Aug-02 6:59  I have tried to recompile Anakrino this WE, but a few main files and projects are missing from the source repository. Thus I and you will have to live with the GPF, And I swallow a small raisin. OwnerDraw TreeView Nnamdi Onyeyiri22-Aug-02 21:34 Nnamdi Onyeyiri 22-Aug-02 21:34  Which methods do i need to override to put myown drawing code in a tree view, for when it is drawing the nodes? Email: theeclypse@hotmail.com   URL: http://www.onyeyiri.co.uk "All programmers are playwrights and all computers are lousy actors." Overriding the 'X' button on a form Rodney S. Foley22-Aug-02 19:38 Rodney S. Foley 22-Aug-02 19:38  I have been trying to figure out, and search for how you can override the normal closing operation of a Form when a user hits the 'X' button, so that it just HIDES the form instead. The closest I found in a forum someplace was they said to override OnClosing if you want to change how to handle the 'X' button default operations. Like so: protected override void OnClosing(CancelEventArgs e) { this.Hide(); } However this does not work. The form is still disposed of, and when I try to show the form again I get an exception say just that. Does anyone know how to do this, or can point me to an article or forum message someplace that explains this? Thanks in advance... Aalst Re: Overriding the 'X' button on a form navinnx22-Aug-02 20:24 navinnx 22-Aug-02 20:24  I think you can override this function: private const WM_QUIT = &H12 protected override void WndProc(ref Message m) { if(m.WParam.ToInt32() == WM_QUIT) this.Height = 0; else base.WndProc(ref m); } navinnx Re: Overriding the 'X' button on a form Stephane Rodriguez.22-Aug-02 20:51 Stephane Rodriguez. 22-Aug-02 20:51  You are doing right. Just add e.Cancel = true; And I swallow a small raisin. Re: Overriding the 'X' button on a form Rodney S. Foley22-Aug-02 21:00 Rodney S. Foley 22-Aug-02 21:00  Stephane, That did the trick. Thanks, Aalst

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