Re: SetDlgItemText() - C / C++ / MFC Discussion Boards

How to change the contrast of NB screen?

ERICKYCheng14-Jul-10 1:50

14-Jul-10 1:50

Dear all:

I know that I can control the NB screen brightness by using WMI. But it seems that I cant use WMI to change the screen contrast. So if I want to do this work, how can I do it? Can I do it with DirectX?

What field of PE Header tells that whether a valid PE file or not?

glitteringsound14-Jul-10 1:35

glitteringsound

14-Jul-10 1:35

Hello,

I need to check that whether a given binary is a valid PE file (Perhaps might some one can rename java file/class file or .js/html files to .exe or .DLL ). In this case i suspect that e_magic field of FileHeader structure would tell this..

or any other field will let the user know about the validity of PE file?

Regards
Usman

Re: What field of PE Header tells that whether a valid PE file or not?

Code-o-mat14-Jul-10 2:05

Code-o-mat

14-Jul-10 2:05

Am not sure if this is what you are looking for or not but here[^] they say:

Old MS-DOS .exe files and the newer Microsoft Windows PE (Portable Executable) .exe files start with the ASCII string "MZ" (4D 5A), the initials of the designer of the file format, Mark Zbikowski. The definition allows "ZM" (5A 4D) as well, but this is quite uncommon.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> "It doesn't work, fix it" does not qualify as a bug report. <
> Amazing what new features none of the programmers working on the project ever heard of you can learn about when reading what the marketing guys wrote about it. <

Re: What field of PE Header tells that whether a valid PE file or not?

Luc Pattyn14-Jul-10 2:23

Luc Pattyn

14-Jul-10 2:23

The PEF specification is a large set of rules that must be obeyed. Obeying some of them is insufficient to be a valid EXE file. So you could check a few of those rules to rule out the obvious violators, you would have to check everything to be absolutely sure it is a real EXE though.

If all you want to do is discard some obvious non-EXE files, look at the first two bytes, and a couple of the header bytes such as the e_magic field.

Smile | :)

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SetDlgItemText()

raju_shiva14-Jul-10 1:16

raju_shiva

14-Jul-10 1:16

HI sir,
How can i get handle of another window.

I am tryiong to send a message to static text box,which is in another window,how can i do it.

I am trying with this.

I have 2 window example (a) and (b)

n a.h

I am doing as
 extern HANDLE hwnd;


in b.cpp
 HANDLE hwnd;

and using this function to display the message

SetDlgItemText(hwnd,IDC_STATIC1,"ds");

But the the handler is not coming here.

what changes i have to do,please let me know.

Thanks
Raj

Re: SetDlgItemText()

CPallini14-Jul-10 1:52

CPallini

14-Jul-10 1:52

You may use such global (there are better ways, I believe), however you have to properly initialize it at runtime.

Smile | :)

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[My articles]

Re: SetDlgItemText()

Richard MacCutchan14-Jul-10 5:53

Richard MacCutchan

14-Jul-10 5:53

Have you intitalised hwnd to the handle of the text box? Perhaps if you show some more of your code it will become clear.

It's time for a new signature.

Re: SetDlgItemText()

raju_shiva14-Jul-10 20:04

raju_shiva

14-Jul-10 20:04

Richard MacCutchan wrote:
Have you intitalised hwnd to the handle of the text box?

This is what i am doing.

I have created one dialog based application(say Test)
In that dialog,i have added one static text box(IDC_MYSTATIC).
From that dialog i am invoking another dialog(say Test1).
In that dialog,i have added a button as(Display message).

My plan is when i click that button.I want to display some msg on
(Test) dialog.

So what i am doing is:

IN Test.h.
extern HANDLE hwnd;

Then in second dialog.

In Test.cpp
HANDLE hwnd


Then on 
DisplayMesage()
{
 SetDlgItemText(hwnd,IDC_MYSTATIC,"ds"); //Here i am getting handle hwnd
}

I dont know whethier i am passing handle correctly or not.
I am getting hwnd as NULL

Thanks
Raj

Re: SetDlgItemText()

CPallini14-Jul-10 20:37

CPallini

14-Jul-10 20:37

If your code shows the actual runtime flow then hwnd is not initialized when you call SetDlgItemText.
Smile | :)

Re: SetDlgItemText()

Richard MacCutchan14-Jul-10 21:46

Richard MacCutchan

14-Jul-10 21:46

Well you have answered my question with "no", so it is no surprise that it does not work. The value of hwnd must be the handle to the window containing the item that you are trying to set the text of. Defining a variable in a header file has no effect on this, you need to get its value from within your Test1 dialog. I would guess (if you are using DoModal() to run Test1) that the correct value can be found from the GetParent()[^] function.

Perhaps a bit more time studying the basics of Windows Programming (Charles Petzold[^] has written some excellent guides) would be useful.

It's time for a new signature.

Making window half of the screen

Sakhalean14-Jul-10 0:38

Sakhalean

14-Jul-10 0:38

Hi All,

I have a form view. I want to display this SDI to Half (Left)of the screen.
Again I have another form view. I want to display this SDI to Half (Right)of the screen.

How to do?

I have changed the CREATESTRUCT structure.
but it is not working.

Any idea.

Re: Making window half of the screen

Niklas L14-Jul-10 0:51

Niklas L

14-Jul-10 0:51

You can use SetWindowPos() on your AfxGetMainWnd() after it has been created in your CApp::InitInstance()

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Re: Making window half of the screen

Sakhalean14-Jul-10 1:29

Sakhalean

14-Jul-10 1:29

OK SetWindowPos is working thank you.

Re: Making window half of the screen[Modified]

Naveen14-Jul-10 0:54

Naveen

14-Jul-10 0:54

You should go for splitter window.

See this sample SDI with split window[^]

Added: Are you talking about two different applications?

nave

[My Articles] [My Blog]

Re: Making window half of the screen

Emilio Garavaglia14-Jul-10 2:08

Emilio Garavaglia

14-Jul-10 2:08

Although Niklas post is correct I should recommend to consider a better design.
Unless you are developing something very specific (like a process plant control synoptic) you should not manage how your window(s) appear on the user screen. You are not the owner of the user environment and the user may also have other application running, may be even more important (or less, depends on the circumstances) than your, and will perceive your popping out at the placement you decide as a sort of ... invadence.

Consider, instead, a different design where a single frame window contains two children (your actual windows), may be either managed through a splitter or with fixed proportional positions.
You decide how the children fits the parent, but let the user free to place the parent in his own screen.

2 bugs found.
> recompile ...
65534 bugs found.
D'Oh! | :doh:

Converting an array of glyph indices to string

Member 70956413-Jul-10 23:51

Member 709564

13-Jul-10 23:51

Hi All,

I am hooking the ExtTextOutW to capture data before it is displayed on the screen. I use Detours and created a dll and I inject it into an application before it starts.

The hooking works as expected, the problem I face is in the string parameter that is passed to the ExtTextOutW function.

When I log the value of this string to a file, it prints some garbled values. I have been trying to find out why this happens and I found out that it is due to glyphs, fonts and unicode.

The application I want to hook will use only English characters, so I want to convert the glyph values into regular characters so that I can log the English characters that is to be displayed on the screen and not some garbled values that come in the string parameter.

I searched on the internet and I came across a post on this forum

http://www.codeproject.com/Messages/446094/Re-Could-not-hook-proc-CreateWindowExA.aspx[^]

Right now I am unable to purchase the book, so can someone please tell me how I can accomplish converting glyph to a string as Ivo Ivanov as mentioned. Ivo Ivanov, if you are reading this can you please help me.

Thanks,
mich

Re: Converting an array of glyph indices to string

Richard MacCutchan14-Jul-10 1:07

Richard MacCutchan

14-Jul-10 1:07

Try posting your question in the forum at the end of the article and the author will be notified.

It's time for a new signature.

How to Move an MFC Button. [modified]

lgmanuel13-Jul-10 22:58

lgmanuel

13-Jul-10 22:58

hi, I am new to VC++ MFC, i am trying to create a simple app. using MS Visual Studio 2005.

i want to move three button to scroll left when i click the left button, same if i click the right button, it should scroll right. then it will stop if i click the center button.

but i don't know how to start the code part, all did was to create the GUI.

the Design looks like this..

Check URL to view ScreenShot.

http://h1.ripway.com/lgmanuel/Imgs/gui.png

modified on Wednesday, July 14, 2010 5:04 AM

Re: How to Move an MFC Button.

Niklas L13-Jul-10 23:04

Niklas L

13-Jul-10 23:04

Use a timer[^] for the updates and call SetWindowPos()[^] or MoveWindow()[^] to move the buttons.

home

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:09

lgmanuel

13-Jul-10 23:09

thank you for that info., but i am a total new to VC++ MFC,.

where do i put the code. should i just double click the button and add the code like Visual Basic do?

Re: How to Move an MFC Button.

Niklas L13-Jul-10 23:13

Niklas L

13-Jul-10 23:13

Pretty much.

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Re: How to Move an MFC Button.

Cedric Moonen13-Jul-10 23:13

Cedric Moonen

13-Jul-10 23:13

You should really buy a book about VC++. It is nearly impossible to help someone who has almost no knowledge of VC++ or C++ through a forum. It will take ages to explain some basic concepts. You will be much more efficient by reading a book first.

Cédric Moonen
Software developer

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

Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:20

lgmanuel

13-Jul-10 23:20

i think that's the best thing to do for now?.. read a book and understand the concepts and terminology used in VC++. anyway, thanks for the advice.

Re: How to Move an MFC Button.

Niklas L14-Jul-10 0:57

Niklas L

14-Jul-10 0:57

How did you end up in this situation anyway? Did you spice up your CV?

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Re: How to Move an MFC Button.

lgmanuel13-Jul-10 23:38

lgmanuel

13-Jul-10 23:38

by the way, here is the app. that i was trying create. you can download the project and check it, it's just a design and no codes yet, i just named the controls to their ID's..

what i am tring to do is move the three buttons until they are totally out the the app window..

thanks for the help guys, appreciate it.

here is the URL to download the project.
http://h1.ripway.com/lgmanuel/VC MFC/MoveTheButton.rar

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