Re: How do you stop EditBox from displaying partial characters ? - C / C++ / MFC Discussion Boards

Anonymous11-Jun-04 14:56

11-Jun-04 14:56

Hi,good day.
I want control USB device in vc program.The USB device's driver have been installed.I know use to WIN32's API function CreateFile(...) open the USB device,and use to WIN32's API function ReadFile(),WriteFile() read or write this device.
I question:
How to use this WIN32's API function to control USB device!

Re: Help! How to use USB device .

bikram singh11-Jun-04 21:28

bikram singh

11-Jun-04 21:28

Visit the usb.org site. Get the IOCTLS you need. Read the documentation. You may need to read the USB specs too.

Bikram Singh

Capturing/Saving the selected dialog

aparajita11-Jun-04 14:54

aparajita

11-Jun-04 14:54

How to capture and save the selected dialog as ".bmp" in VC++?

Aparna

Re: Capturing/Saving the selected dialog

Anonymous11-Jun-04 15:06

Anonymous

11-Jun-04 15:06

Hi! capturing "Display".

Re: Capturing/Saving the selected dialog

Johan Rosengren11-Jun-04 21:08

Johan Rosengren

11-Jun-04 21:08

You could try http://www.codeproject.com/bitmap/screencapture.asp[^] for the capturing, http://www.codeproject.com/bitmap/cximage.asp[^]
or http://www.codeproject.com/bitmap/jscdibdata.asp[^] for handling the bitmap.

How to intercepting a video stream using directx

fjrg7611-Jun-04 14:37

fjrg76

11-Jun-04 14:37

Hi.

I'm trying to use direcdraw in order to make some image processing for a project of my own. In the samples that came with the SDK there is one "stillcap" that I modified, however, it is one shot at time, and what I need is to intercept the stream, to process it, and finally to display it, almost in real time. I don't know so much about directx, so if someone can help me I would appreciate it a lot.

How do you stop EditBox from displaying partial characters ?

Defenestration11-Jun-04 14:33

Defenestration

11-Jun-04 14:33

I'm using the EditBox and ComboBox (with EditBox) controls.

How do you stop it from displaying partial characters (ie characters which can't be completely displayed in the editbox) ? ie. the character at the right of the editbox.

I only want to display whole characters.

Are there any flags which will give me this behaviour ?

Re: How do you stop EditBox from displaying partial characters ?

bikram singh11-Jun-04 21:52

bikram singh

11-Jun-04 21:52

1. if taking a short, fixed-length input, increase the edit box width no?

2. use multi-line edit box

3. For other cases, it can be done, but there is no easy way out. involves getting font width and resizing the edit box accordingly.

more information needed for a better answer: why would you need something like this?

Bikram Singh

Re: How do you stop EditBox from displaying partial characters ?

Defenestration12-Jun-04 0:03

Defenestration

12-Jun-04 0:03

bikram singh wrote:
more information needed for a better answer: why would you need something like this?

If you enter enough text to overfill the editbox (ie. the editbox needs to scroll), when you highlight the text from the end to the beginning, the highlight does not highlight the partial character at the right of the editbox, which apart from looking odd, it doesn't indicate to the user that more text is highlighted, other than what the user can see.

Not a big problem, but more of a user interface issue.

Some applications don't show partial characters, so I'm sure it must be possible, but I just don't know how.

bikram singh wrote:
3. For other cases, it can be done, but there is no easy way out. involves getting font width and resizing the edit box accordingly.

How would this work for non-fixed width characters, like the default MS Sans Serif font ?

Appeding text in rich edit control on Japanese/chinese OS

rajeev_kc11-Jun-04 12:38

rajeev_kc

11-Jun-04 12:38

I am facing problem is displaying the set of strings in rich edit control in Jananese/Chinese OS.

I am using rich edit control in my application to display some dynamic text based on some result. I am using WTL for my application development. The code what I have written works fine on eng and other lang OS except lang that supports DBCS. The code would go something like this:

TCHAR szTestName[MAX_PATH];
memset(szTestName, 0, sizeof(szTestName));
TCHAR szTestName[MAX_PATH];
memset(szTestName, 0, sizeof(szTestName));

_tcscpy(szTestName, _T("Test Name"));
_tcscpy(szTestResult, _T("Test Result"));

m_crichEditctrl.AppendText(szTestName);
m_crichEditctrl.AppendText(szLineFeedChar); // "\n"
m_crichEditctrl.AppendText(szTestResult);

Here I am trying to add "Test Name" in the first line and "Test Result" in the second line. The issue what I am facing is the line feed char is getting inserted after char 'm' (in Test Name), I tried even inserted different char other than line feed char, always I get the same problem. When I debugged I found out that SetSel (SetSel/ReplaceSel is called internally by AppendText api of rich edit) always returns one index less and this is taken by ReplaceSel to add the text.

Please note that this problem happens only when I use the translated japanese/chinese chars for "Test Name" and "Test Result". If I just use the english strings as shown in the code it works fine.

Am I missing setting something for the rich edit for other lang OS (especially lang that supports DBCS) except english. Please help me out on this.

Thanks in advance.
Rajeev.

Re: Appeding text in rich edit control on Japanese/chinese OS

Zeeshan Bilal11-Jun-04 23:44

Zeeshan Bilal

11-Jun-04 23:44

USe variable of CString type with CEDITCONTROL
and do this

CString show= ur_str_variable + " \n ";
( Value type variable .... m_strCtrlEdit)
m_strCtrlEdit = m_strCtrlEdit + show;
( Control Type Variable ..... m_EditCtrl)
m_EditCtrl . LineScroll(1);
UpdateData(FALSE);

i hope this will work ....
Bcoz when u use UpdateData (FALSE)
it will show the value in the control from its value type variable.

GOOD LUCK

GetDriveType etc.

Todd Smith11-Jun-04 12:11

Todd Smith

11-Jun-04 12:11

Is there a way to differentiate between HD's and other various USB devices such as a USB Flash Card?

I'm currently using GetDriveType() == DRIVE_FIXED but it can't tell the difference between HDs and memory sticks etc.

Todd Smith

Re: GetDriveType etc.

Ravi Bhavnani11-Jun-04 12:31

Ravi Bhavnani

11-Jun-04 12:31

This[^] article may help.

/ravi

My new year's resolution: 2048 x 1536
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Profiler for VC++ & W98

CaesarCZ11-Jun-04 11:14

CaesarCZ

11-Jun-04 11:14

Hello,
does anyone of you know of a good profiler that runs under Windows 98? Most I found work under 2000/XP only (codeglow, AMD code analyst etc.),or are crap (like LTProf... can't really get it to work on larger projects) . I only own the standard version of MSVC so I don't have the MS profiler. Thanks

Edit Box for real numbers

Grahamfff11-Jun-04 10:40

Grahamfff

11-Jun-04 10:40

Is it possible to have an Edit Box wuth spin controls that allows the user to enter data such as 123.45 and increment/decrement the value.

All I have seen deal only with integers.

grahamfff

Re: Edit Box for real numbers

Ravi Bhavnani11-Jun-04 12:53

Ravi Bhavnani

11-Jun-04 12:53

Clickety[^]

/ravi

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"Empty" Window application behaving very strange

User 665811-Jun-04 9:44

User 6658

11-Jun-04 9:44

Hi!

I've just written my small framework (CApplication) to create a simple Window and waiting for messages.
It's doing nothing more but a RegisterClassEx, CreateWindow and ShowWindow.

The message pump is as follows:

while(PeekMessage(&msg, NULL, 0, 0,PM_REMOVE) || !g_App.g_AppDone)
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);

		// Not yet implemented
		// g_D3D.Render();
	}

The strange this is, once started the app takes up 50% of CPU time and 1.6megs of RAM - for a simple window being idle Eek! | :eek:

What the hell is going wrong?

regards

modified 12-Sep-18 21:01pm.

Re: "Empty" Window application behaving very strange

David Crow11-Jun-04 10:31

David Crow

11-Jun-04 10:31

Greeeg wrote:
The strange this is, once started the app takes up 50% of CPU time

I assume you are acquiring this number from Task Manager, yes? If so, does it remain at 50%, or thereabout, for the life of the application? Read MSDN article Q74042 on why the while loop does not let the system go idle.

Greeeg wrote:
...and 1.6megs of RAM - for a simple window being idle

This number is often misinterpreted. Read this aricle for a good explanation.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: "Empty" Window application behaving very strange

User 665811-Jun-04 10:57

User 6658

11-Jun-04 10:57

Thanks, I read the kb article and tried to change my loop. So I changed my message loop to the one identically the samples in the DirectX9 SDK use:

MSG msg;
            ZeroMemory( &msg, sizeof(msg) );
            while( msg.message!=WM_QUIT )
            {
                if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )
                {
                    TranslateMessage( &msg );
                    DispatchMessage( &msg );
                }
                else
                    Render();
            }

The DirectX samples use 0% CPU time, mine does 50%.
Furthermore, my app does not react on the [x]-button or "x Close" menu entry in the system menu. Confused | :confused:

/edit: Wait...some of the DirectX SDK samples also consume 50% cpu time - now does it mean the Microsoft programmers are lazy? If yes, how do I make me loop work correctly? Big Grin | :-D

What the heck...!? Frown | :(

modified 12-Sep-18 21:01pm.

UI design question ( presenting preferences )

Maximilien11-Jun-04 9:11

Maximilien

11-Jun-04 9:11

seems to me that there is one "accepted" way of presenting settings/preferences to the user, in a dialog box with some tabs; which is the Microsoft way.

either that or the other more "linux" way which is to replace the tabs ( situated at the top ) with a list of items ( with/out graphics ) on the left of the dialog ( like in firefox )

any other ways ? prefered ways ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: UI design question ( presenting preferences )

Navin11-Jun-04 9:20

Navin

11-Jun-04 9:20

MY personal preference is the Mozilla way - you have a tree-like structure of main pages on the left, and clicking on a node shows options for that item on the right. This is good if you have a ton of stuff. If you just have a few preferences, a regular old PropertySheet is probably best.

The bigger question is where to put the "Preferences..." menu option so your users can even find it. There doesn't seem to be a good standard for that.

"Fish and guests stink in three days." - Benjamin Franlkin

Re: UI design question ( presenting preferences )

Ravi Bhavnani11-Jun-04 12:54

Ravi Bhavnani

11-Jun-04 12:54

Navin wrote:
The bigger question is where to put the "Preferences..." menu option so your users can even find it. There doesn't seem to be a good standard for that.

I tend to use Tools | Options... which seems to be the replacement for the old File | Preferences... menu item.

/ravi

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Re: UI design question ( presenting preferences )

Henry miller14-Jun-04 3:10

Henry miller

14-Jun-04 3:10

Tabs are better so long as you can get by with only one row of tabs. (Microsoft fails this all the time)

The linux way comes from the idea that you should give users a million options and let the user choose what to do. There is no good UI for doing this (at least not that we know of), the linux thing is a compromise, hard to figure out, but once you know how it works it is easy to find the option you are looking for.

If you can't get by with one row of tabs see if there is a small set of things the user is likely to want to change, and put that on a different screen and make it easier to access. The rest should be called advanced settings and placed in the linux style control.

how to enable the "ok" button after 8 second in MFC Dialog box

shiva shankar11-Jun-04 8:38

shiva shankar

11-Jun-04 8:38

in my project, when the dialog box (window) is initialized( i,e Onintdialog())the "ok" button is disabled, and i want it to enable automatically after 8 seconds. plz can any one guide me to enable the button after 8 seconds...

Re: how to enable the "ok" button after 8 second in MFC Dialog box

Ravi Bhavnani11-Jun-04 8:49

Ravi Bhavnani

11-Jun-04 8:49

Create a timer in the OnInitDialog() handler. In the OnTimer() handler, enable the OK button and kill the timer.

/ravi

My new year's resolution: 2048 x 1536
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