GUI implementation

Morozov Alexey

I have standart generated by ClassWizard SDI MFC-app. I want that some operation invoked by user that may be performed a while was displayed like dialog with progress bar and "Cancel" button. And while it's displaying, operation should performs, progress bar should displays appropriate value and so on till operation has been completed or user has clicked "Cancel" What's the easiest way to implement that. After searching through MSDN some implementation approach has appeared but it's so difficult. Thanks in advance.

Christian Graus

It depends on what the process is. If it's under your control ( i.e. you are working with a set of your own data, using your code ), then a modeless dialog box, with a flag being set by pressing the cancel button, and the flag state checked after each iteration through the process taking place in a loop would be the best way. If you're formating a hard drive, or some other process not taking place in your code, you'll need a thread. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002

Nish Nishant

You could create a new worker thread. This worker thread can do the background stuff and keep updating the progress control. Thus the cancel button on your main window will still be receptive and not frozen as you might be experiencing now. Nish The lady in red is dancing with me Cheek to cheek There's nobody here It's just you and me It's where I wanna be But I hardly know this beauty by my side I'll never forget the way you look tonight

Christian Graus

This being the obvious solution, I guessed it may be the 'too hard' solution he found in MSDN. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002

Morozov Alexey

Thanks but I can't understand how can I implement it in MFC way. Would you mind show me the way :) My task is first ie I want to operate own data Thanks in advance

Morozov Alexey

You're about right :) It's no so hard, but I thought that building new thread, organizing some kind of inter-thread sinchronization is too big to doing such small task. Besides really I have had separate thread that perform that task already. But it's so bulky :( That why I decided to ask simplier solution.

Nish Nishant

Morozov Alexey wrote: That why I decided to ask simplier solution. I have always found that the simpler solutions are often the right solutions. The complicated solutions make you feel nice, but often just ends up in a mess. KISS is actually true :-) [except for the 2nd 'S'] Nish The lady in red is dancing with me Cheek to cheek There's nobody here It's just you and me It's where I wanna be But I hardly know this beauty by my side I'll never forget the way you look tonight

Tomasz Sowinski

Morozov Alexey wrote: After searching through MSDN some implementation approach has appeared but it's so difficult. Have you checked Feb'97 issue of MSJ - "Wicked Code" column by Jeff Prosise contains ready-to-use CWaitDialog class. The article may be in MSDN on your harddisk, if it's not there, go to msdn.microsoft.com Tomasz Sowinski -- http://www.shooltz.com

Christian Graus

Morozov Alexey wrote: My task is first ie I want to operate own data So you don't have a task, you just want to know how to do it ? CWaitDialog dialog; // A modeless dialog that creates itself in it's constructor for (int i=0;i<10000000;++i) { // do something if (dialog.bStopNow) { // Any necessary cleanup break; } } is all I had in mind. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002

Morozov Alexey

Thanks a lot :) I'll be searching more carefully in future. Shit, why did I can't find it myself :) It's really what I need.