C / C++ / MFC Discussion Boards

HawkSoftware25-Mar-02 13:58

25-Mar-02 13:58

I have a C++ program that has some context information for an HTML page. How can I pass parameters to an HTML page?

Thanks,

Hawk

Re: Passing parameters to an HTML page

Derek Waters25-Mar-02 14:48

Derek Waters

25-Mar-02 14:48

I'm not entirely sure what you mean about context information and what HTML page you're talking about.

If you've got a HTML control and you're using Navigate() to open a page, you just need to append the CGI parameters to your target path. For example for the page:

http://www.myserver.com/scripts/hello.asp

you can just append parameters to set the variable 'Name' to 'Joe Blow' and 'Age' to 25 as follows:

http://www.myserver.com/scripts/hello.asp?Name=Joe+Blow&Age=25

You need to replace ' 's with '+'s. Also, technically, you need to replace any unprintable characters with escape sequences '%2F'. To find out more, search MSDN for CGI and ISAPI information.

Hope this helps.

------------------------
Derek Waters
derek@lj-oz.com

Re: Passing parameters to an HTML page

HawkSoftware25-Mar-02 18:37

HawkSoftware

25-Mar-02 18:37

Derek,

Thanks for that input. I have just started tinkering with ASP but I think that would require a server right?

Here is the scoop. I have a MFC C++ application that uses the WebBrowser2 interface. I am navigating to an HTML file that looks like this:

<xml id="data" src="CurrentStates.xml">
<xml id="format" src="TransformCurrentState.xsl">

CurrentState.innerHTML = data.transformNode(format.XMLDocument);

The "TransformCurrentState.xsl" needs to parse through the "CurrentStates.xml" which is a database of several dozen elements. The user can identify which element to be parsed but I don't have any way to tell the script which element is to be parsed.

Ideally there would be a way to tell this script something like: building=1 floor=1 room=1. Right now I am doing some pretty ugly stuff. I am generating a small xsl file that is included by the "TransformCurrentState.xsl". It works but it feels wrong so I know there must be a better way.

Any more thoughts?

Thanks,

Steve

Re: Passing parameters to an HTML page

HawkSoftware25-Mar-02 18:39

HawkSoftware

25-Mar-02 18:39

That doesn't look to good.

Here is the file again:

.
.

.<xml id="data" src="d:/NOWTrak/database/system/CurrentProbeStates.xml">
.<xml id="format" src="TransformCurrentState.xsl">

.
. CurrentState.innerHTML = data.transformNode(format.XMLDocument);
.

.

.

.
.

Re: Passing parameters to an HTML page

HawkSoftware25-Mar-02 18:40

HawkSoftware

25-Mar-02 18:40

For Pete's sake!

<.HTML>
<.HEAD>

<.XML id="data" src="d:/NOWTrak/database/system/CurrentProbeStates.xml">
<.XML id="format" src="TransformCurrentState.xsl">

<.SCRIPT FOR="window" EVENT="onload">
CurrentState.innerHTML = data.transformNode(format.XMLDocument);
<./SCRIPT>

<.BODY TOPMARGIN=0 LEFTMARGIN=0 BGPROPERTIES="FIXED" BACKGROUND="ATMINOWTRAK.JPG">

<.DIV id="CurrentState" style="position:absolute;left=200;top=10;font-family:'Arial';font-size:12;font-weight:bold">
<./DIV>

<./BODY>
<./HTML>

Re: Passing parameters to an HTML page

Derek Waters25-Mar-02 19:20

Derek Waters

25-Mar-02 19:20

Oooh, XML. Sorry, can't help you with that, I'm afraid. I know that if you were using ASP (VBScript here, I'm afraid), and you tried to open:

http://www.myserver.com/scripts/hello.asp?Name=Joe+Blow

and hello.asp contained:

<%
vstrName = Request.QueryString("Name")
%>

then vstrName would contain "Joe Blow". As for how you use that in your XML, I'm not sure.

------------------------
Derek Waters
derek@lj-oz.com

Resource DLL

WilliamB25-Mar-02 13:27

WilliamB

25-Mar-02 13:27

I am converting a lot of old projects' resources into separate resource DLLs so that we can easily localize the resource dll to different languages. For MFC application, it is easy since I only have to call "AfxSetResourceHandle" at the program's initialization. But, for a traditional C windows program, it seems there is NO such easy thing. For each LoadString or LoadIcon... in the original c program, I need to manually put the resource dll's handle there. Is there any other better way to handle this. Thank you very much.

Re: Resource DLL

Ben Burnett25-Mar-02 13:42

Ben Burnett

25-Mar-02 13:42

HINSTANCE g_hCurrentResource;
HINSTANCE MySetResourceHandle ( HINSTANCE h ) {
  HINSTANCE prev = g_hCurrentResource;
  g_hCurrentResource = h;
  return ( prev ); 
}
int MyLoadString (
  UINT uID,             // resource identifier
  LPTSTR lpBuffer,      // pointer to buffer for resource
  int nBufferMax ) {    // size of buffer
  return ( LoadString ( g_hCurrentResource, uID, lpBuffer, nBufferMax ) ); }

cheers,
-Ben

colored textbox

25-Mar-02 12:38

Can someone please explain how i can change the color of the background of a text box and change the color of the text itself?

Thanks

Re: colored textbox

Alan_Yu25-Mar-02 13:52

Alan_Yu

25-Mar-02 13:52

Text Box? Did you mean CEdit control?
I think maybe you can change the font color to change the color of
the text. Laugh | :laugh:

Re: colored textbox

Nish Nishant25-Mar-02 14:31

Nish Nishant

25-Mar-02 14:31

over-ride OnCtlColor(...)

pDC->SetTextColor(RGB(170, 100, 227));
pDC->SetBkColor(RGB(0, 0, 0));

Nish

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

Mapping solution for C++

Member 9625-Mar-02 12:43

Member 96

25-Mar-02 12:43

Hello, can anyone recommend Mapping software that can be integrated into a C++ application.

I've looked at Microsoft Mappoint, which comes with an ActiveX control which in theory should work in Visual studio however they repeatedly mention "for use with Visual Basic 6.0". I've scoured the net for the past two hours and could not find any concrete information on mapping libraries / controls that can be embedded in Visual C++ applications.

Any info would be appreciated.

Re: Mapping solution for C++

Paul M Watt25-Mar-02 18:34

Paul M Watt

25-Mar-02 18:34

If you can use it in VB 6.0 you will have not problem using it in VC++. Just simply import the type library that is declared for the active X control, and you can use.

Re: Mapping solution for C++

Member 9625-Mar-02 19:17

Member 96

25-Mar-02 19:17

Exactly what I thought, but they stress VB6 every time in all their documentation, seems strange they would exclude other development software.

Maybe they just don't want to support it in other development platforms.

I'm going to give the trial version a whirl and see what I can do with it, but I'm leery about it not being supported as this is going into commercial software.

Cheers

Ground Zero Tech-Works
http://www.ayanova.com

Re: Mapping solution for C++

DRHuff26-Mar-02 11:10

DRHuff

26-Mar-02 11:10

Check out Blue Marble Geographics or MapInfo or ESRI ( these last two may be overkill)

Dave Huff

There are no small projects - only young ones.

finding max min and mean value

25-Mar-02 12:12

this is not visual c++ but i realy need help
my function is::

#include <stdio.h>
#include <conio.h>
int a,b,c,max,min,av;

void main() {
clrscr();
printf("1.number:");
scanf("%d",&a);
printf("2.number:");
scanf("%d",&b);
printf("3.number:");
scanf("%d",&c);
//--------------------
if(a>b && a>c)
a=max;
else if(b>a && b>c)
b=max;
else
c=max;
//---------------------
if(a

Re: finding max min and mean value

Joaquín M López Muñoz25-Mar-02 12:23

Joaquín M López Muñoz

25-Mar-02 12:23

printf("max=%d\n",max);

Et cetera.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: finding max min and mean value

25-Mar-02 12:49

a=1 b=2 c=3
but when i runthe function prints like;

max=178
min=180
av=182

what is wrong

Re: finding max min and mean value

Tim Smith25-Mar-02 13:46

Tim Smith

25-Mar-02 13:46

a = max;
...
b = max;
...
c = max;
...

Assignments work in other direction.

max = a;
...

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Re: finding max min and mean value

Nish Nishant25-Mar-02 14:32

Nish Nishant

25-Mar-02 14:32

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

SuspendThread??

hkl25-Mar-02 12:10

hkl

25-Mar-02 12:10

Hi,

Is it possible for a thread to suspend itself?? If yes, can you please give me a simple example??

What I know is:

(Class)*ptr;
...

ptr->SuspendThread();

But, can it be suspending itself??

Thank you!!;)

Re: SuspendThread??

Joaquín M López Muñoz25-Mar-02 12:25

Joaquín M López Muñoz

25-Mar-02 12:25

Just call SuspendThread from inside the thread code (I'm assuming you're using MFC worker threads, aren't you.) Of course, it has to be another thread that brings this one to life again with ResumeThread.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: SuspendThread??

hkl25-Mar-02 12:26

hkl

25-Mar-02 12:26

Yes,.. I am using MFC worker threads.

Great! Thanks!! Big Grin | :-D

string values??

25-Mar-02 11:59

Hi there,
Can somebody please help me????.
I have a list box and a text box in my application, i need to know how to load the value of the string in the list box, to the text box with the puSh of a button.

Re: string values??

Paul M Watt25-Mar-02 12:05

Paul M Watt

25-Mar-02 12:05

Add this code to the function that handles the event when the button is pushed.

Send a LB_GETTEXTLEN message specifying the index of the listbox that you want the text for, This will tell you how much memory you need to allocate for the string.

Allocate a buffer that is large enough to hold the string.

Send a LB_GETTEXT message to the listbox specifying the same index.

Call SetWindowText on the edit control in order to set the string into the edit control.

Delete the memory that you allocated for the string.

If you are using MFC, you can use the correpsonding member functions to the messages that I told you about in the CEdit and CListBox classes to do the same thing.

Refer to msdn.mircosoft.com for more details.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.