VFW blank frames at start of avi - C# Discussion Boards

GuyThiebaut30-Apr-13 0:38

30-Apr-13 0:38

Have a look at the definition of a modal form:
What is a modal form?[^]

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Eddy Vluggen30-Apr-13 0:59

30-Apr-13 0:59

In WinForms, one can show a modal form from within a modal form. How is your link being helpful?

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

GuyThiebaut30-Apr-13 1:45

30-Apr-13 1:45

Eddy Vluggen wrote:
In WinForms, one can show a modal form from within a modal form. How is your link being helpful?

He is not using winforms...

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Eddy Vluggen30-Apr-13 2:11

30-Apr-13 2:11

That doesn't change much; whether or not he's using winforms doesn't change the concept.

If it's a limitation of ASP, I'd expect somewhat more explanation than a link to "Let me Google that for you".

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

GuyThiebaut30-Apr-13 2:22

30-Apr-13 2:22

LMGTFYTPTCBFY

Let me google that for you then paste the contents below for you Roll eyes | :rolleyes:

modal form  
Web definitions
when a modal form displayed, no other form in the application can receive the focus until the modal form is closed; no other statements...

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Eddy Vluggen30-Apr-13 2:52

30-Apr-13 2:52

Thanks for the copy/paste. Says the same as the WinForm-version, and does not imply that the modal form itself cannot launch anything. The text that no other statements are executed is an oversimplification; the modal form still has to process paint-operations.

I can imagine "why" it wouldn't work in a webform, but this isn't a valid enough reason.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

GuyThiebaut30-Apr-13 2:53

VFW blank frames at start of avi

30-Apr-13 2:53

I am unable to test it but I thought it was a clue Smile | :)

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Boris The Bold29-Apr-13 23:24

Boris The Bold

29-Apr-13 23:24

I'm creating .avi files (using VFW), the files consist of screen capture images displayed at 1 fps. I found some sample code for c# at:
http://www.adp-gmbh.ch/csharp/avi/write_avi.html[]
This creates the ,avi file with my images in. However I'm getting a variable number of blank frame at the beginning of the file. Sometimes over 50 blank frames (a lot at 1 fps!). There appears to be no consistency to the number of blank frames, different codecs or recording lengths have no consistent effect on their number.

Some media players when playing the avi's just show the first correct frame a number of times, virtual dub initially shows them as blank and subsequently as distorted images.

Does anyone have any idea what I may be doing wrong?

James

Buying stock is easy, selling it is worse... loop problems?

lordoftrades29-Apr-13 22:33

lordoftrades

29-Apr-13 22:33

Hello

I'm trying to create a program that scan the values and compare values against some average highest or loweste values. It seems to me that the entry is no problem, but getting out of the position is not working as it should.

I'm used to VBA, and there I'd just set up a loop to start IF an entrysignal was trigged. And that loop would run until exitsignal was trigged...

But I'm not experienced at all with writing in C#, so I'm not sure how this code actually runs, ie step-by-step:

// Check whether the indicator value is oversold.
            if (Value < yesterdayslowest50Value && yyesterdayslowest50Value > yesterdaysValue) {
                // Check whether a short position exists for the symbol.
                if (_enableShorting && PositionExists(IQ_TradeStatus.OPEN, symbolIndex, IQ_Direction.SHORT_SIDE)) {
                    // Generate a buy to cover market order.
                    BrokerMarket(IQ_ActionType.BUY_TO_COVER, symbolIndex, 0, IQ_TIF.DAY, "CoverToLong");
                }
                // Check whether there are no long positions for the symbol.
                if (!PositionExists(IQ_TradeStatus.OPEN, symbolIndex, IQ_Direction.LONG_SIDE)) {
                    // Generate a buy market order.
                    int orderIndex = BrokerMarket(IQ_ActionType.BUY, symbolIndex, 0, IQ_TIF.DAY, "Long");
                    // Set a stop loss on the order.
                    BrokerSetStopLossPercent(orderIndex, _stopLoss, true, "");
                    // Set a take profit on the order.
                    BrokerSetTakeProfitPercent(orderIndex, _takeProfit, true, "");
                    // Set a trailing stop loss on the order.
                    BrokerSetTrailingStopLoss(orderIndex, _isPercent, _trailingStop, "");
                }
                //When to exit:
                if(Value > yesterdayshighest13Value && yesterdaysValue < yyesterdayshighest13Value && PositionExists(IQ_TradeStatus.OPEN, symbolIndex))
                    {
                        int[] positionIndexes = PositionIndexList(IQ_TradeStatus.OPEN, symbolIndex);
                        double quantity = PositionQuantity(positionIndexes[0]);
                        BrokerMarket(IQ_ActionType.SELL, symbolIndex, quantity, IQ_TIF.DAY, "Sell");
                    }
            }
            // Check whether the indicator value is overbought.
            else if (Value > yesterdayslowest13Value && yyesterdayslowest13Value < yesterdaysValue) {
                // Check whether a long position exists.
                if (PositionExists(IQ_TradeStatus.OPEN, symbolIndex, IQ_Direction.LONG_SIDE)) {
                    // Generate a sell market order.
                    BrokerMarket(IQ_ActionType.SELL, symbolIndex, 0, IQ_TIF.DAY, "SellToShort");
                }
                // Check whether a short position doesn't exist.
                if (_enableShorting && !PositionExists(IQ_TradeStatus.OPEN, symbolIndex, IQ_Direction.SHORT_SIDE)) {
                    // Generate a sell short market order.
                    int orderIndex = BrokerMarket(IQ_ActionType.SELL_SHORT, symbolIndex, 0, IQ_TIF.DAY, "Short");
                    // Set a stop loss on the order.
                    BrokerSetStopLossPercent(orderIndex, _stopLoss, true, "");
                    // Set a take profit on the order.
                    BrokerSetTakeProfitPercent(orderIndex, _takeProfit, true, "");
                    // Set a trailing stop loss on the order.
                    BrokerSetTrailingStopLoss(orderIndex, _isPercent, _trailingStop, "");
                }
                //When to exit:
                if(Value < yesterdayslowest13Value && yesterdaysValue > yyesterdayslowest13Value && PositionExists(IQ_TradeStatus.OPEN, symbolIndex))
                    {
                        int[] positionIndexes = PositionIndexList(IQ_TradeStatus.OPEN, symbolIndex);
                        double quantity = PositionQuantity(positionIndexes[0]);
                        BrokerMarket(IQ_ActionType.BUY_TO_COVER, symbolIndex, quantity, IQ_TIF.DAY, "Cover");
                    }
            }

It seems that my code have issues exiting the trades. BTW I've used IQBrokers software to program this.

If anyone see some obviouse mistake I'd appreciate it.

Kind regards
Espen

Re: Buying stock is easy, selling it is worse... loop problems?

Eddy Vluggen29-Apr-13 23:04

Re: Buying stock is easy, selling it is worse... loop problems?

29-Apr-13 23:04

lordoftrades wrote:
so I'm not sure how this code actually runs, ie step-by-step:

Press F10 instead of F5.

Press F10 again.

Press F10 again.

Press F10 again.

That's how it get's executed, statement by statement. Hover the mouse over a variable to see it's contents.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

lordoftrades29-Apr-13 23:07

lordoftrades

29-Apr-13 23:07

Hello

That would have worked fine in VisualStudio, but I writing this code in the software of IQBroker. There are no such step-by-step features as I can see. And I think it will be pretty big mess if I try to open the code in VS, as I'm not sure how to get control over all subcodes and the database too.

Kind regards
Espen

Re: Buying stock is easy, selling it is worse... loop problems?

Richard MacCutchan29-Apr-13 23:23

Richard MacCutchan

29-Apr-13 23:23

lordoftrades wrote:
I writing this code in the software of IQBroker.

I think you will get better help at http://www.iqbroker.com/[^].

Use the best guess

Re: Buying stock is easy, selling it is worse... loop problems?

Eddy Vluggen29-Apr-13 23:32

Re: Buying stock is easy, selling it is worse... loop problems?

29-Apr-13 23:32

lordoftrades wrote:
And I think it will be pretty big mess if I try to open the code in VS, as I'm not sure how to get control over all subcodes and the database too.

Create some mock-objects to fake the IBroker-objects and write the logic in a real IDE Smile | :)

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Freak3029-Apr-13 23:40

Freak30

29-Apr-13 23:40

You wrote, that in VBA you would use a loop. However in this code I see no loop at all. Maybe the entry and exit conditions are mutually exclusive and don't appear on the same day?

Re: Buying stock is easy, selling it is worse... loop problems?

dusty_dex30-Apr-13 1:00

dusty_dex

30-Apr-13 1:00

I'm just pointing out a minor typo in // When to exit

yyesterdayshighest13Value

Re: Buying stock is easy, selling it is worse... loop problems?

lordoftrades30-Apr-13 1:05

lordoftrades

30-Apr-13 1:05

Thanks, I think its supposed to be like this, it was my definiton of the day before yesterday Smile | :)

If I only could be able to go step-by-step I'd better understand how it works

Smile | :)

Kind regards
Espen

SessionUnlock event not firing sometimes in C# window service

Abhishek Shankhdhar29-Apr-13 22:08

Abhishek Shankhdhar

29-Apr-13 22:08

Hi,

I have created a window service for tracking the idle time of employee. It tracks the login time,logout time, when system get idle (lock automatically using service) and unlock time.

Sometimes unlock event not firing and not track the time into database.
What may be the problem in it ?? Is there any message pump concept should I follow??
Need the help....

Re: SessionUnlock event not firing sometimes in C# window service

Pete O'Hanlon29-Apr-13 22:22

Pete O'Hanlon

29-Apr-13 22:22

Are you using a really tiny font to show your code here? Is it hiding in the dot above an i?

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: SessionUnlock event not firing sometimes in C# window service

Abhishek Shankhdhar29-Apr-13 22:30

Abhishek Shankhdhar

29-Apr-13 22:30

Actually I am not getting what are you trying to say...Is it related to my question???

Re: SessionUnlock event not firing sometimes in C# window service

Eddy Vluggen29-Apr-13 23:06