C / C++ / MFC

Anybody see what I did wrong?

27-Oct-03 13:32

Hi Deepak,

The following code will change the textcolor for the entire contents of the richedit to basically random stuff. I wrote it as the onTimer handler in a RichEditView. I'm not sure if this is what you meant but maybe it will help.

It is a pretty crazy code and it flickers alot when I tried it but maybe it will help.

<br />
void CColorsView::OnTimer(UINT nIDEvent) <br />
{<br />
  if(nIDEvent == 1){ // timer #1<br />
    // get a pointer to the rich edit control<br />
    CRichEditCtrl& r = this->GetRichEditCtrl();<br />
<br />
    // save the current text selection <br />
    CHARRANGE cr;<br />
    r.GetSel(cr);<br />
<br />
    // select all<br />
    r.SetSel(0,-1);<br />
<br />
    // get the current character formatting<br />
    CHARFORMAT cf;<br />
    r.GetSelectionCharFormat(cf);<br />
<br />
    // change the color and set it to the selected text<br />
    cf.crTextColor = RGB((GetRValue(cf.crTextColor)-5),(GetGValue(cf.crTextColor)+8),(GetBValue(cf.crTextColor)+17));<br />
    cf.dwEffects = cf.dwEffects & ~CFE_AUTOCOLOR;<br />
    r.SetSelectionCharFormat(cf);<br />
<br />
    // restore the old text selection<br />
    r.SetSel(cr);<br />
  }<br />
  CRichEditView::OnTimer(nIDEvent);<br />
}<br />

Oinka27-Oct-03 11:39

Re: Anybody see what I did wrong?

27-Oct-03 11:39

I'm using Visual C++ 6.0 SP5

I create a new MFC Appwizard project, I choose SDI with doc/view architecture support, then I leave everything at the defaults until it asks me How do you want your toolbars to look? and I choose Internet Explorer Rebars then finish.

Next I enter the Project menu and choose Add to project then Components and Controls. This opens up the Components and Controls Gallery. In there I pick the Registered ActiveX Controls folder and find the Microsoft Multimedia Control (for me it is version 6.0) and insert it leaving all the options at their defaults.

In the resource editor under dialogs I edit the IDR_MAINFRAME dialog and add the multimedia control to it from my controls palette. I double click my newly created multimedia control and Classwizard pops up with a message saying IDR_MAINFRAME is a new resource... do you want to add a class for it? and I choose select an existing class and choose CMainFrame. Now I close Classwizard and go back to the resource editor and right click my multimedia control and choose events to add the OnPlayClick event handler. It prompts me for the name of the event handler and I just leave it as the default OnPlayClickMmcontrol1. Then in the code for the event handler I just put something simple to test out the button like AfxMessageBox("bleah");

Next I edit the end of the CMainFrame::OnCreate function like so in order to initialize the multimedia control (this assumes you have c:\windows\media\ding.wav available):

<br />
...<br />
...<br />
// get a pointer to the multimedia control<br />
Cmci* mci = (Cmci*) m_wndDlgBar.GetDlgItem(IDC_MMCONTROL1);<br />
<br />
// initialize the multimedia control<br />
mci->SetFileName("c:\\windows\\media\\ding.wav");<br />
mci->SetCommand("Open");<br />
<br />
return 0;<br />

I also include the multimedia control header in mainfrm.cpp like so to satisfy the compiler

<br />
#include "mci.h"<br />

I run the program and the multimedia control works except the OnPlayClick event handler doesn't seem to get called.

If I do the same idea but with a dialog based program instead of SDI then it will work normally. I think for some reason the activeX control won't deliver events when it is on the dialogbar but I can't fathom why.

anybody know why?

I am stumped...

Any ideas are appreciated.

-Oinka

Anthony_Yio27-Oct-03 16:33

Anthony_Yio

27-Oct-03 16:33

Has the function AfxOleInit() been called somewhere in your codes?

Sonork 100.41263:Anthony_Yio

still can't figure it out

Oinka27-Oct-03 19:17

Re: still can't figure it out

27-Oct-03 19:17

Hi Anthony,

no that function is not called anywhere in the project.

Is it needed? I can't find any documentation about it other than what I found in msdn:

Remarks

Initializes the OLE DLLs.

MSDN you suck!

anyways, I tried adding a call to AfxOleInit() but all it did was make an assertion fail. When I looked into this I found out that it was checking to see if AfxOleInit() has been called twice. So even though the function call doesn't appear in any of MY code, the framework seems to have called the function for me behind the scenes.

See Ask Dr. GUI #57[^]

so yeah I still can't figure out how to get the event handler to work.

Steve S27-Oct-03 22:30

Steve S

27-Oct-03 22:30

The control will send the notification to it's parent window (the dialog bar).
You could put a trace for it in the dlg bar's PreTranslateMessage, just to check what's happening, or use SPY++ to spy on the dialog bar.

Steve S

Thanks!

Oinka28-Oct-03 12:35

Linking two tables programmatically

28-Oct-03 12:35

Hey Steve,

With your help I finally got this damn thing to work Big Grin | :-D

Since the CDialogBar class (the one that was created in the OnCreate method of the CMainFrame class) was getting my messages I replaced it with a class of my own derived from CDialogBar and added my message map and eventsink map and it works now.

Here's an even harder question: why in the hell did microsoft make me jump through that many hoops just to use a bloody activeX control in a toolbar? Isn't there an easier way?

thanks,

-Oinka

Microsft Sucks!

DimkaSPB27-Oct-03 11:04

DimkaSPB

27-Oct-03 11:04

Hello Gurus,

Does anyone know how to link multiple Access tables programmatically. Tables are located in 2 different databases.
I am using VC++ 6.0 / MFC.

Thanks,
Dmitry

Re: Linking two tables programmatically

Terry O'Nolley27-Oct-03 11:39

Terry O'Nolley

27-Oct-03 11:39

In what way do you need them linked?
You could try creating temporary tables to store fields from both databases.

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Re: Linking two tables programmatically

DimkaSPB27-Oct-03 11:54

DimkaSPB

27-Oct-03 11:54

I need to link the tables in order to run an update query on one database.
I am writing a tool that allows a user to set up mappings (fields in database1 map to fields in database2 based on certain conditions). The tool then creates an update query that joins tables from both databases and updates certain fields in database1. Since the tool may be run on different databases, I do not know in advance which tables will have to be linked.

Thanks.

Make things as simple as possible, but no simpler. -- Albert Einstein

I still DO NOT UNDERSTAND keyboard accelerators

BoudewijnEctor27-Oct-03 10:44

Re: I still DO NOT UNDERSTAND keyboard accelerators

27-Oct-03 10:44

Hi,

Does anyone know a good tutorial on keyboard accels, or does anyone want to give sime kind of lesson about it (like a checklist or something).

My problem is like this:

I have an app wich shows pictures, this works.

But every time a user presses the right-arrow button, the app needs to show a new picture (this is done by calling showNextPicture()).

I've already build showNextPicture(), but I can't build the link between the key and the function.

PS I'm using a dialog based app, with MFC support

Thanks for reading this!

Terry O'Nolley27-Oct-03 11:44

Terry O'Nolley

27-Oct-03 11:44

Look at PreTranslateMessage() and TranslateMessage() in your docs. It will point you to where you can determine what key was pressed and from there what handler to call.

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Re: I still DO NOT UNDERSTAND keyboard accelerators

BoudewijnEctor28-Oct-03 5:21

Re: I still DO NOT UNDERSTAND keyboard accelerators

28-Oct-03 5:21

OK, I've read it,

But Is still don't understand what exactly I've got to do with those messages etc. can you explain that to me?

Steve S28-Oct-03 21:41

Steve S

28-Oct-03 21:41

Add a menu option like ID_SHOW_NEXT, make this call your function, then map the arrow key to your menu option in the accelerator resource.

Steve S

Can't compile thread

BoudewijnEctor27-Oct-03 10:22

27-Oct-03 10:22

Hi there,

I've downloaded a tutorial from thecodeproject about tcp servers, and it contains the following code:

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])<br />
{<br />
    int nRetCode = 0;	<br />
	<br />
    cout << "Press ESCAPE to terminate program\r\n";<br />
    AfxBeginThread(ServerThread,0);<br />
    while(_getch()!=27);<br />
	<br />
    return nRetCode;<br />
}

and this

<br />
UINT  ServerThread(LPVOID pParam)<br />
{<br />
 //lots of other code<br />
 return 0;<br />
}<br />

I've copied the code into a neat console app with mfc functionality, but this isn't compiling.

How is this possible?

Re: Can't compile thread

Michael P Butler27-Oct-03 10:31

Michael P Butler

27-Oct-03 10:31

BoudewijnEctor wrote:
I've copied the code into a neat console app with mfc functionality, but this isn't compiling.

What error do you get?

Have you defined UINT ServerThread(LPVOID pParam) before the call to AfxBeginThread?

Michael

'Logic, my dear Zoe, merely enables one to be wrong with authority.' - The Doctor: The Wheel in Space

Re: Can't compile thread

BoudewijnEctor27-Oct-03 10:38

C++ Application for TemplatePrinter

27-Oct-03 10:38

Do I hvae to define ServerThread before it's call (I'm not used to that)?

I'll try it, and if it works thank you a lot!!! Big Grin | :-D

Re: Can't compile thread

David Crow27-Oct-03 12:49

David Crow

27-Oct-03 12:49

BoudewijnEctor wrote:
Do I hvae to define ServerThread before it's call (I'm not used to that)?

No, but you do have to declare it.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

naxtell27-Oct-03 9:31

naxtell

27-Oct-03 9:31

Firstly, I am sorry if this is in the wrong area but I am looking for a way to create an ActiveX control that I can include in my ASP page for using MS's TemplatePrinter functionality. Here is the site at MSDN
I need to call IOleCommandTarget:Exec, but I'm confused on how to set this up. Does anyone have experience with this?
Thanks,
Nate

HC3025 Error : Tab Control

help_me_pleeze27-Oct-03 8:53

help_me_pleeze

27-Oct-03 8:53

Hi
I am getting this error on making a diaolag box.
Actually i am making a tab control and i just designed a few boxes and i received this error. I have started over and over again but again i get this error . please help me on how do i get rid of this kind of error.

HC1002: Note:
Using existing phrase table: Gui.ph
HC3025: Warning: topic #1 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "menu_record".
HC3025: Warning: topic #3 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_OLE_EDIT_LINKS".
HC3025: Warning: topic #3 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_EDIT_PASTE_LINK".
HC3025: Warning: topic #3 of CC:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_OLE_INSERT_NEW".
HC1010: Note:
The following mapped Topic IDs were not used in any topic:
AFX_HIDP_UNREG_DONE
AFX_HIDP_GET_NOT_SUPPORTED
HID_HT_OBJECT
.
.
.
.
and it continues to a long listtttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt.

Thanks in advance.

David Crow27-Oct-03 9:21

David Crow

27-Oct-03 9:21

It's from the help compiler. Are you making a help file? If not, you can just remove the dependency from your application.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

help_me_pleeze27-Oct-03 11:34

help_me_pleeze

27-Oct-03 11:34

Hi david
yes i making the conext sensitive help.
I dont know why is this kind of error coming up .
It was ok a few days back.
How do i remove the "dependancy" from my application ?

Please elaborate.

Thanks for replying.

-----------
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Five are left . They have "decided to fly off" and havent actually flown away yet.

David Crow27-Oct-03 12:53

David Crow

27-Oct-03 12:53

help_me_pleeze wrote:
How do i remove the "dependancy" from my application ?

I believe you handle that in the Project Dependencies dialog box.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?