C / C++ / MFC Discussion Boards

Re: Handling Abort for Long running operations in MFC

MuraliKrishnaP6-Aug-10 10:03

6-Aug-10 10:03

Hi Ash,

I appreciate your interest in helping me. I am still finding a hard time to solve this. May be I am not smart enough to design this properly.

I went through the pattern. Even with this active object, if I have to make synchronous calls, the client must be blocked till the message is received. Or may take time some where in client also.

Consider this: (simplified for reading)

When I start an operation, My application performs following..

1. Connect to server (may take 2 secs)
2. Create a GUI for showing some data (milli secs)
2. Get data (RMI) (40 secs)
3. Update GUI (milli secs)
5. Based on the above data start creating next GUI.
6. Create next GUI.
6. Get modified data for second GUI. (RMI) (4 mins!)
7. Update second GUI

Till now these are sequential in my application. User can always create n number of GUIs. Each GUI creation and updation may require n RMI calls and they are synchrounous. Meaning, each RMI call is blocked till it is received and the marshalling args are huge. I may also get MBs of data.

Example: Consider following call stack.

DataIDL::GetData() // Use proxy to get data. Blocked till the data is fetched.
Glyph::GetData() // After glpyh creation
GlyphsHandler::Execute() // Creates Glyph get data and Update Glyph
Doc::Execute() // Execution start of all Glyphs

Doc starts Execution. Glyphshandler creates glyphs, gets data and updates glyph. It goes on for all glyphs. Now as it all sequential, I cannot decouple each IDL call to threads as the next call depends upon previous call's data.

Hope I am not taking too much of your time. Is it possible to asynchronously decouple the IDL getdata using active object so that the next call will have no effect?

Many thanks for your advices till now.
Murali Krishna

Re: Handling Abort for Long running operations in MFC

«_Superman_»3-Aug-10 15:57

«_Superman_»

3-Aug-10 15:57

Not sure if this will be of help to you, but if you're using SendMessage from one thread to another, you can use the ReplyMessage API to achieve concurrency.

«_Superman_»

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Polymorphism in C

problem using ShellExecute to open folder

Rahul Vaishnav2-Aug-10 23:51

Rahul Vaishnav

2-Aug-10 23:51

Hi all,

I have faced an amazing problem.

Please go through below steps to reproduce:

1. create two folders ex. new1 & new2 on D drive.
2. create one short cut of folder new1 like "Shortcut to new1" on D drive only.
3. Rename "Shortcut to new1" to "new2"
4. Execute below code

ShellExecute(GetSafeHwnd(), NULL, L"D:\\new2", L"", NULL,
    SW_SHOWNORMAL);

Actual Results : It opens folder new1 from D drive.
Expected results : It should open folder new2 D drive.

Re: problem using ShellExecute to open folder

enhzflep3-Aug-10 0:10

enhzflep

3-Aug-10 0:10

Howdy.

It's a very simple fix. The outcome kinda makes sense too, to me.

Anyhoo, just try this instead -

ShellExecute(HWND_DESKTOP, NULL, L"C:\\new2\\", L"", NULL, SW_SHOWNORMAL);

Re: problem using ShellExecute to open folder

Rahul Vaishnav3-Aug-10 0:14

Rahul Vaishnav

3-Aug-10 0:14

Thanks for you reply...

Re: problem using ShellExecute to open folder

Shivanand Gupta5-Aug-10 1:09

Shivanand Gupta

5-Aug-10 1:09

you rename shortcut name , it dose not matter.
because if you change the shortcut name but it still target old one.
so you want to change target then you do
right click on shortcut --> select property -> change target path

This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

reza toorani2-Aug-10 22:52

reza toorani

2-Aug-10 22:52

Hi I have a app which it build by VC++.When running it in my computer show message
This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.
but run it other computer fine it.
My Computer have a C++ 2008 Redistributable.

Help me

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

Cedric Moonen2-Aug-10 22:54

Cedric Moonen

2-Aug-10 22:54

reza toorani wrote:
My Computer have a C++ 2008 Redistributable.

You need to install the redistributable package on the target computers too. You can download it from here[^]

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

reza toorani2-Aug-10 23:48

reza toorani

2-Aug-10 23:48

I install redistributable package but give me error message

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

KarstenK3-Aug-10 0:09

KarstenK

3-Aug-10 0:09

you have mixes version of the dlls. The installed dlls are others than the building dlls. Use the service pack level and/or check the manifest.

tip: dependency walker

Press F1 for help or google it.
Greetings from Germany

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

reza toorani3-Aug-10 0:28

reza toorani

3-Aug-10 0:28

Thanks
I download Dependency Walker files and load .exe appliaction file.error MSVCR80D.DLL file.
I download this file and copy the root application.but give me error message.

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

KarstenK3-Aug-10 0:36

KarstenK

3-Aug-10 0:36

Do you see the big fat "D" in the dll name. It is a debug build. D'Oh! | :doh:

Press F1 for help or google it.
Greetings from Germany

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

reza toorani3-Aug-10 1:08

reza toorani

3-Aug-10 1:08

the dll name is DT.dll
I think that "d" is for dll name.
If it is a debug build,What do I?

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

KarstenK3-Aug-10 1:15

KarstenK

3-Aug-10 1:15

Ypu wrote "I download Dependency Walker files and load .exe appliaction file.error MSVCR80D.DLL file."

that means your app or some dlls is referring to a debug dll. You need a release build of that file.

Press F1 for help or google it.
Greetings from Germany

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

reza toorani3-Aug-10 1:18

reza toorani

3-Aug-10 1:18

this application fine work in other computers.

Re: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.

Sauro Viti3-Aug-10 3:55

Sauro Viti

3-Aug-10 3:55

If depends.exe says that your application links to MSVCR80D.DLL, it means that the application is a debug build.
Do you have Visual Studio 2005 installed on the computers where the application run properly, but not installed on the computer where it doesn't starts?
Remember that the debug versions of the C/C++ runtime libraries are provided with Visual Studio but they are not redistributable.

Edit Bitmap File

raju_shiva2-Aug-10 22:29

raju_shiva

2-Aug-10 22:29

Hi sir,
I am trying to write a text into Bitmap,i am able to write.
But i am not able to fill the colur into the region where i am writing.

i.e the colour of bitmap and the text which i am writing is not matching.

Here is my code:

OnPaint()	
{	
	CPaintDC dc(this);
	CDC dcImage;
	CRgn* rgn;
	BITMAP bm;
	if (!dcImage.CreateCompatibleDC(&dc))
		return;
	
	m_bitmap.GetBitmap(&bm);
	CBitmap* pOldBitmap = dcImage.SelectObject(&m_bitmap);


    	CBrush mybrush(RGB(255,0,0));
	dcImage.TextOut(521,95,"Testing");  // Here i am writing to Bitmap
	rgn=new CRgn;	
	rgn->CreateFromPath(&dcImage);
	dcImage.FillRgn(rgn,&mybrush);      // Here i am trying to fill the colur to the region where i am writing
	dc.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcImage, 0, 0, SRCCOPY);	
	dcImage.SelectObject(pOldBitmap);
}

Any idea will be helpful

Thanks
Raj

Re: Edit Bitmap File

CPallini2-Aug-10 22:45

CPallini

2-Aug-10 22:45

From CRgn::CreateFromPath documentation [^]:

The device context identified by the pDC parameter must contain a closed path.

Please have a look at the following code sample [^].
Smile | :)

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Re: Edit Bitmap File

KingsGambit2-Aug-10 22:47

KingsGambit

2-Aug-10 22:47

I suggest you to check return values of the functions like CreateFromPath to see if the function call has failed or not.

Rectangle

john56322-Aug-10 21:45

john5632

2-Aug-10 21:45

Hi,

How to draw a tranparent rectangle with my selected pen?

Re: Rectangle

Richard MacCutchan2-Aug-10 21:58

Richard MacCutchan

2-Aug-10 21:58

I'm not certain exactly what you are trying to do but you may find the FrameRect[^] function suits your purpose.

It's time for a new signature.

Re: Rectangle

«_Superman_»2-Aug-10 22:35

«_Superman_»

2-Aug-10 22:35

Select the NULL_BRUSH into the device context and use the Rectangle function.

«_Superman_»

I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: Rectangle

Maximilien3-Aug-10 3:03

Maximilien

3-Aug-10 3:03

Why do you want to draw it if it's transparent ? Roll eyes | :rolleyes:

Seriously... have a look at CDC::SetBkMode (have not tried it).

Watched code never compiles.

Re: Rectangle

bleedingfingers3-Aug-10 9:26

bleedingfingers

3-Aug-10 9:26

Maximilien wrote:
Seriously... have a look at CDC::SetBkMode (have not tried it).

Nope. Thats only for text.

...byte till it megahertz...

Re: Rectangle

bleedingfingers3-Aug-10 9:30

bleedingfingers

3-Aug-10 9:30

The brute force method would be to draw four line segments yourselves but that would be less than ideal if you are going to paint for some top end graphics (as this method tends to have jagged corners). So if its supposed to be neat then take others' suggestion.

...byte till it megahertz...

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