Cpp to C# drawing speed test complete. Download available here.

[aewarnick]

These files have no viruses or anything unusual.
To compare the speed of Cpp to C# just unzip the exe's.
Directions are included.

2 things: You need the .net framework or winxp or higher.
I made the cpp file with Borland. Let me know if it does not work.

[parksie]

Just use the code if its there.

[transcendental]

aewarnick : I managed to get it compile in VC7. But there is nothing, except "jlkjgas" word on the screen. Did you upload the correct source?

[aewarnick]

Remember how I mentioned placing any bitmap into the directory and naming it "pic.bmp"...

Also, I have updated news and am VERY excited. I have gotten cs to be much much faster! I just skipped over using some of it's convieniences like drawing with drawImage instead of BitBlt and especially the automatic double buffering, that made the biggest difference.

You will see that soon!

[transcendental]

I have already done that before I made that post. It doesn't work. I even put the full path, it still doesn't work.

But there is nothing, except "jlkjgas" word on the screen. Did you upload the correct source?

[transcendental]

The cs program works. Now I'm very sure you posted the wrong code.

In main.cpp

void a::DrawImage(HBITMAP hBmp, int *posX, int *posY, int *sizeW, int *sizeH)
{
	
}
};
.....


        case WM_PAINT:
        {
        if(draw)
        {
        PAINTSTRUCT lpPaintStruct;
        HDC hdc= ::BeginPaint(thisHwnd, &lpPaintStruct);

        A.DrawImage(thisHwnd, hdc, hImage,W,H, &lpPaintStruct.rcPaint, &drawRect);

        ::DeleteDC(hdc);
        ::EndPaint(thisHwnd, &lpPaintStruct);
        }
        }

In a.cpp

       
        case WM_PAINT:
        {
        PAINTSTRUCT lpPaintStruct;
        HDC hdc= ::BeginPaint(h, &lpPaintStruct);
        RECT rect;
        rect.left=0; rect.top=0; rect.right=500; rect.bottom=500;
        ::DrawText(hdc, "jlkjgas", -1, &lpPaintStruct.rcPaint, NULL/*DT_CENTER*/);

        ::DeleteDC(hdc);
        ::EndPaint(h, &lpPaintStruct);
        }

[aewarnick]

Don't bother posing it back unless you changed something to get it to work.

This is where I am having the problem right now:
if(formsWndProc)
::CallWindowProc(formsWndProc, hwnd, message, wParam, lParam);

[C++ Error] main.cpp(125): E2342 Type mismatch in parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long (__stdcall *)(void *,unsigned int,unsigned int,long)')

Did you have the same problem or did it just compile?

[aewarnick]

Got it working. Although only with Borland. You will have to compile the code for the C++ program.

I included a cs regular buffed program and a cs optimized buffed program.

[transcendental]

Originally posted by aewarnick

[C++ Error] main.cpp(125): E2342 Type mismatch in parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long (__stdcall *)(void *,unsigned int,unsigned int,long)')

Did you have the same problem or did it just compile?

I did not have this error. I had some other error which went away after I changed ext of a.cpp to a.h .

[aewarnick]

I think the error was some kind of Borland junk and that is why you didn't get the error. Dev does not get it either. I will try renaming the a.cpp file to a.h and see if Dev knows what prototypes are then.

[aewarnick]

I was going to post the new file compiled with Dev but the exe is 476kb!! Is there any way to slim that down to 27kb where Borland was?

[transcendental]

At least it is better than having to distribute the DLLs with the 27KB app.

Email to me.

[aewarnick]

You are right about that, however, my program barely has anything in it. A C# app with a bunch of code only compiles to 80kb.

I didn't use anything in the Borland dll's (that I know of). The same code I compiled with Borland I also just now compiled with Dev. One very very minor change to get Borland to compile the code but that would not use the dll's to do it.

Maybe I don't understand what is going on in the Dev compiler. I just see my code and say wow, a big file for such little code!

[CornedBee]

I will look it over when I'm home. I'm very suspicious of everything calling C# faster than C++...

[aewarnick]

No need to be suspicious, I didn't say it was faster, I just said I made one of the C# programs faster than the other C# program by not using the SetStyle DoubleBuffer. I used my own double buffing technique. You will see that the C++ program is much much much much much much much faster! Not that much faster, but you get my point.

Here is the 1st part of 3 downloads:

[aewarnick]

2:

[aewarnick]

3: Comes with the merge file to put it back together again.

[aewarnick]

This is weird in the full definition of the word!!!!!______-----++==
I installed a program (Ulead Photo Express) on my computer, rebooted and when I ran the same programs I posted here the C++ program now runs as slow as the cs optimized program!!!

Before I restarted the computer it was at least twice as fast!!! What happed? There is no memory leak and the file was untouched.

I know Photo Express does not have a virus or anything like that.
I did recently just install a hard drive on my computer though (D and it is not installed properly. It isn't mounted, I just attatched the wires.

My one browser is acting strange too.

Is there any explanation for this??

[aewarnick]

I am guessing it is the hard drive so I copy the c++ file and the picture to the c drive. Both files work correctly on both drives.

This is the weird part. I delete the file and pic from c, still works right on d.
I CLOSE THE C FOLDER, then it goes back to being slow!!!!

In fact, every time I open the C folder the program on d works perfecly, but when I close the c folder it does not.

I know this has nothing to do with my C++ program but why does it not effect the cs programs?

Have you ever heard of anything like this before?

[aewarnick]

I rebooted and now everything is fine. I guess something didn't hook right for the Photo Express install the first time.

You have to admit that was very very strange.

[CornedBee]

Windows IS very strange.

[aewarnick]

I am glad I am not alone on that one.
By the way I did not use any other source code in any of those programs except my own. So I know my programs did not cause that weird stuff to happen.

[transcendental]

I notice your C++ code contains my custom alphablend code. Why?

[aewarnick]

It's just waiting there for me to finally getting around to testing it out. I have not used it yet but it will be part of the a class.
Do you want me to remove it?

What I meant above was in the C# apps where the source was not included. I had forgotten all the AlphaBlend code of yours in the C++ source. Sorry transendental, I forgot it was there or else I would have mentioned it.