Re: passing values from edit boxes to the button - C / C++ / MFC Discussion Boards

regale27-Jun-04 19:19

27-Jun-04 19:19

Is the wsaasynSelct() function limited under windows xp or windows 2003? the configuration is default of system. i
don't limit any port.

Linking to C++

c. s.26-Jun-04 15:46

c. s.

26-Jun-04 15:46

I have created a few procedures in assembly that I want to be C++ callable. I also want to be able to give arguments.
I am using Masm as my assembler and Visual C++ as my compiler.
I already know that I need to append a _ to my functions. I also seem to remember poping things off the stack for parameters, but I don't know for sure.
An example is a procedure:
_Out
I want it to take a byte as one parameter and a word as the next, and then I want to be able to call it from a C++ program that it is somehow linked to. (I don't know how to do that either)
How would I go about doing this?

Thanks

Re: Linking to C++

darkbyte27-Jun-04 4:29

darkbyte

27-Jun-04 4:29

Is bringing your assembler code to a CPP file an option ?

here's an example, even with a return value

word Out(char p1, word p2)
{
word param;
_asm
{
mov ah, p1
mov cx, p2
..
..
mov param, cx
}
return param;
};

Hope it helps,

DarkByte

Using Alt key in Windows app?

IGx8926-Jun-04 11:57

IGx89

26-Jun-04 11:57

I'm working on a Win32 (actually, Qt) app, and would like to use the alt key to modify some keyboard/mouse buttons. It's working great, except that pressing the alt key moves the keyboard focus to the menu (like it normally should). How can I disable/avoid that? Most importantly, is there a simple solution, without having to manually process messages?

Thanks!

Re: Using Alt key in Windows app?

Jörgen Sigvardsson27-Jun-04 11:04

Jörgen Sigvardsson

27-Jun-04 11:04

I don't think there's an easy solution. Especially not so with Qt, as it probably hides the message pump from you.

I tried this in MFC:

BOOL CMainFrame::PreTranslateMessage(MSG* pMsg)
{
   if((pMsg->message == WM_SYSKEYDOWN || pMsg->message == WM_SYSKEYUP) 
       && pMsg->wParam == VK_MENU) {
      DoMything();
      return TRUE;
   }
 
   return CFrameWnd::PreTranslateMessage(pMsg);
}

and it worked fairly well I believe. It didn't mess with the accelerators (ALT-F for File Menu, ALT-F4 for close application, etc), but it allowed me to do whatever I want to with the ALT-button. In this case I'm just filtering it out. If it's possible to implement a PreTranslateMessage() function in Qt, it's not a hard problem.

Good luck. Smile | :)

--
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Welle: Erdball - F104-G Starfighter

Re: Using Alt key in Windows app?

IGx8928-Jun-04 13:45

IGx89

28-Jun-04 13:45

Thanks! Qt does have its own version of PreTranslateMessage, and I implemented it like so:

<br />
if(pMsg->message == WM_SYSKEYUP && pMsg->wParam == VK_MENU && bIgnoreNextMenuKey)<br />
   return true;<br />

passing values from edit boxes to the button

lyn26-Jun-04 10:34

lyn

26-Jun-04 10:34

hi everyone.. i'd like to ask a very² simple question.. i guess it's too simple to post it here Blush | :O

say i have this equation.. c=a+b..
i want to make an interface which has 3 edit boxes and a button. two boxes for the user to input a and b and another box is for the answer (which is the c).. with the press of the button, i can get the answer in the answer box. my question is, how to pass the values in the two input boxes (a & b)to the button and pass the answer to the answer box (c)?
thanx for your guidance and time.. Big Grin | :-D

~wilDcat~

Re: passing values from edit boxes to the button

DougW4826-Jun-04 18:08

DougW48

26-Jun-04 18:08

I've been using C# for a number of months, so I'm a bit rusty on Visual C++, but I'll try to help you out.

You can get the values in a number of ways, but I have always found the following to be the easiest:

CString A_Value, B_Value, C_Value;<br />
EditBoxA.GetWindowText( A_Value );<br />
EditBoxB.GetWindowText( B_Value );<br />
<br />
int TempA = 0;<br />
for ( int x = 0; x < A_Value.GetLength(); x++ )<br />
TempA = isdigit(CurrentSelection[x])?TempA*10+(CurrentSelection[x] -48):TempA;<br />
<br />
int TempB = 0;<br />
for ( int x = 0; x < B_Value.GetLength(); x++ )<br />
TempB = isdigit(CurrentSelection[x])?TempB*10+(CurrentSelection[x] -48):TempB;<br />
<br />
CValue.Format( "%d", TempA+TempB );<br />
EditBoxC.SetWindowText( CValue );

The Above should work...again, I have used C++ for a while, there may be an easier method of parsing the strings into integer values, but those loops will work (although they don't work for doubles, only integers...you'll have to figure that out on your own.)

Good luck, I hope I at least gave you an idea of what you can do.

-Doug

Re: passing values from edit boxes to the button

lyn26-Jun-04 18:17

lyn

26-Jun-04 18:17

thanx very much.. at least u give me something to work on.. i'm new to vc but i'll try it out.. thanks very much! Big Grin | :-D

~wilDcat~

Re: passing values from edit boxes to the button

PJ Arends26-Jun-04 18:24

PJ Arends

26-Jun-04 18:24

You can use strtol(), strtoul(), or strtod() (among others) to convert strings to numbers.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Need a GetClusterSize function

Paul Steane26-Jun-04 8:47

Paul Steane

26-Jun-04 8:47

I need a GetClusterSize function so that I can work out how much space a file will occupy on a particular disk.

The WIN32 function GetDiskFreeSpace should do this but doesn't work for large disks. The replacement, GetDiskFreeSpaceEx, doesn't have this capability.

So what do I do?

Target is any WIN32, VC++ 6, MFC.

a font from a ttf file?

CaesarCZ26-Jun-04 5:56

CaesarCZ

26-Jun-04 5:56

Hello,
is there a way to make a HFONT out of a TTF file? without installing the font? (I need a font for my project, but I don't want to mess up with the installation - and I also want it to be working when the user reinstalls the OS and keeps the app)

thanks a lot

Re: a font from a ttf file?

darkbyte27-Jun-04 4:22

darkbyte

27-Jun-04 4:22

try and take a look at AddFontFile(...) which maps to GdipPrivateAddFontFile(...) in GDI+.

Do a search on MSDN for the functions i mentioned or try "Font Functions" in the search box.

DarkByte

How can I rename an NT user using the ADSI?

zzzhouzhou26-Jun-04 5:46

zzzhouzhou

26-Jun-04 5:46

How can I rename an NT user using the ADSI(Active Directory Service Interfaces)? The IADs::SetInfo method can only change user's fullname not rename a user.

scrollbar

cruscotto26-Jun-04 4:36

cruscotto

26-Jun-04 4:36

hi all!
Mu problem is to draw the scrolbars on my application.
It is realized with mfc and it is MDI.

I wanto to draw the scrollbars on the child window when I load an image larger than the window.

I try to edit code in the ChilFrm.cpp file and i wrote this:

BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
if( !CMDIChildWnd::PreCreateWindow(cs) )
return FALSE;
cs.style |= WS_VSCROLL | WS_HSCROLL;

return TRUE;
}

In this way the two scrollbar appear, but they don't do anything.

can you help me?

thks a sorry for my english

Re: scrollbar

Prakash Nadar26-Jun-04 7:31

Prakash Nadar

26-Jun-04 7:31

cruscotto wrote:
In this way the two scrollbar appear

yes it will coz you are enableing both the scroll bars...

you need to use setscrollrange method to start working on the scrollbar...

I'll write a suicide note on a hundred dollar bill - Dire Straits

Re: scrollbar

cruscotto26-Jun-04 21:51

cruscotto

26-Jun-04 21:51

ok, i added the setscrollrange function to my code for both scrollbars.

Now i want the they appear only when i load an image that is larger than the window. I see that exist the ShowScrollBar function, but it give me a runtime error, always!I put the code in the precreatewindow of the childFrm class.

can you explain me? Confused | :confused:

Toolbar flicker

Jim Crafton26-Jun-04 4:07

Jim Crafton

26-Jun-04 4:07

I am using the Win32 toolbar common control in some code. When I resize the window that the toolbar is parented to it flickers. Is there any way to stop this?
The toolbar's parent window is created with no brush, and returns false for WM_ERASEBKGND. Is there some thing special about the way I need to handle the toolbar itself?

Thanks

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Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!

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Re: Toolbar flicker

Michael Dunn26-Jun-04 12:42

Michael Dunn

26-Jun-04 12:42

Check that your main window has the WS_CLIPCHILDREN style.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
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I think so Brain, but if we shaved our heads, we'd look like weasels!

Re: Toolbar flicker

Jim Crafton29-Jun-04 18:35

Jim Crafton

29-Jun-04 18:35

I checked, and all of my controls have the WS_CLIPCHILDREN bit set, the main window, and the any custom child control's that get created (the toolbar's parent is a custom child control)

¡El diablo está en mis pantalones! ¡Mire, mire!

Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!

SELECT * FROM User WHERE Clue > 0
0 rows returned

Visual Basic Question

Stylemaster26-Jun-04 3:47

Stylemaster

26-Jun-04 3:47

Hey there

I've just started to learn programming and using visual basic 6 (teaching myself) would really appreciate it if someone could explain to me how it is that variables work and exactly how to use them as this part has got me stumped.

Thanx a million

Style

Work hard, Play hard

Re: Visual Basic Question

Hesham Amin26-Jun-04 4:15

Hesham Amin

26-Jun-04 4:15

since this is a VB6 Q.
you should send it to the vb forum not vc++

anyway :
you use variables to store some data in memory for processing...

for example..

dim a as single
dim b as single
dim c as single 'here i made 3 place holders in memory for single variables.

a=CSng(Text1.Text) 'read data from Text1 into memory location called a
b=CSng(Text2.Text) 'read data from Text1 into memory location called b
c=(a+b)/2 'get the avarage of the two numbers and store it in c for latter use

MsgBox c 'use the variable c

Send msg to child by using FindWindow

Sumit Kapoor26-Jun-04 0:16

Sumit Kapoor

26-Jun-04 0:16

hi...

I've to much deep child to which i want to sen msg. from mainfrm class..

as there r some RUNTIME_CLASS...
so can't understand how to pass msg. from mainframe to that class..
can anybody help me..
I've hint as v may need to use FindWindow..But can't get solution yet from tweo days..
can anybody help?

THanks

---Sumit Kapoor--- sumit_kapoor1980@hotmail.com

Re: Send msg to child by using FindWindow

PJ Arends26-Jun-04 6:06

PJ Arends

26-Jun-04 6:06

You have asked this question before. A quick look in MSDN will reveal a host of functions that you could use to find the CWnd pointer to the window you want to send the message to. Look up CWnd, CFrameWnd, CSplitterWnd, CView, and CDocument. Read what each of the member functions does, and find the ones that will do what you want.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

CComboBox

TrungHuynh25-Jun-04 23:57

TrungHuynh

25-Jun-04 23:57

Hello every body

I'm writting a GUI TOol Kit for MFC control, for every controls of MFC

CButton,... I replace with CBMSButton... and i use the

DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) function to draw.

IT work fine with button,Titlebar, CheckBox, Radio

But with CComboBoxEx i replace with CBMSComboBox and i call DrawItem

but this function isn't called. I don't know why ?

Please help me. Thank so much

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