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You can replace all of your code with a single overriden function and two lines of code
void CMyDlg::OnWindowPosChanging(WINDOWPOS* lpwndpos)
{
// This is where it all happens
if(!m_bShowWindow)
lpwndpos->flags &= ~SWP_SHOWWINDOW;
CDialog::OnWindowPosChanging(lpwndpos);
}
Simply turn off m_bShowWindow (which obviously needs to be defined and switched) to show the window. This code prevents the dialog from ever being seen in the first place. Unfortunately Win98, Win95 still seem to briefly flicker before disappearing...but who is running those OS's anyway 
Hope this information is not too late for others searching the message boards...
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Hi!
My project used a CListCtrl for displaying a list. This list had the extended styles LVS_EX_ONECLICKACTIVATE and LVS_EX_UNDERLINEHOT (think of the list as a menu). Now I have to replace this list by a CTreeCtrl. The tree now, of course, doesn't underline the hot items any more and the one-click functionality also doesn't work any more.
Now my question: what message must I send to the tree control to behave like the list before? I've already searched MSDN, but didn't find anything. It must be possible, I have some applications that can do this...
Thanks in advance,
Dominik
_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do?? 
(doesn't work on NT)
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try this
SetWindowLong(hTreeWnd,GWL_STYLE,GetWindowLong(hTreeWnd,GWL_STYLE) | TVS_TRACKSELECT);
Hope it helps 
C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg
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Hope it helps
It did!!
Thank you very much!
Dominik
_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)
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I have be assigned a project which has to have a graphical music keyboard which plays the corresponding note when the key is pressed, it also has to have a simple graphical editor to edit the notes. As i am new to all this i was wondering if anyone could give me any pointers of where to start and along what lines i should go about doing it. I am currently trying to interacted with DLL files to access the soundcard.
Any help would be much appreciated.
Mav
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mavgoose wrote:
As i am new to all
new to what ? generic programming ? sound programming ? windows application ?
anyway, look for for some MIDI api ... and look around CP, there might be something interresting.
Maximilien Lincourt
Your Head A Splode - Strong Bad
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Mav,
It's a lot simpler than you think especially sounding the notes.
The majority of the work will be building a representation of the keyboard that responds to the mouse clicks, what do you mean by edit the notes??
You can use the MIDI API see http://www.borg.com/~jglatt/tech/lowmidi.htm. The sound API has functions that can sound midi output at a given pitch.
Its definitely the easiest way to get the notes sounding, the app itself will need to be threaded in order to sound multiple notes at once...
You will need to link you project to 'winnm.dll' to be able to call midiOutShortMsg() the simplest operation to sound a note. See the section on 'Outputting MIDI data (except System Exclusive)'
have a look at the article and get back to me regarding questions,
Ross W
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Mav,
It's a lot simpler than you think especially sounding the notes.
The majority of the work will be building a representation of the keyboard that responds to the mouse clicks, what do you mean by edit the notes??
You can use the MIDI API see http://www.borg.com/~jglatt/tech/lowmidi.htm. The sound API has functions that can sound midi output at a given pitch.
Its definitely the easiest way to get the notes sounding, the app itself will need to be threaded in order to sound multiple notes at once...
You will need to link you project to 'winnm.dll' to be able to call midiOutShortMsg() the simplest operation to sound a note. See the section on 'Outputting MIDI data (except System Exclusive)'
have a look at the article and get back to me regarding questions,
Ross W
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Ross,
How would you go about attaching 'winnm.dll' to a project? I am at a complete block at the moment which isn't good, I am just unable to get my head around linking the dll files then accessing them. Do i need to create a header file? Which things will i then need to include in the file?
Cheers
Mav 
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I was wondering whether anyone could help me…
I would like to produce a ‘Visio’ style GUI in MFC. I have made some very basic programs using MFC but not too sure how to go about this. I need to produce a network diagram based on some code that I have already written. Ideally I should be able to move the ‘objects’ (switches, hosts, etc) within the window. Should I inherit the CRichEditView as the base class and insert OLE objects. If anyone has any opinions/helpful comments/links to help me it would be appreciated.
Even if you know of a different/easier way of doing this please point me in the right direction.
Thanks very much
Simon
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Just buy the rogue wave components that do this - www.roguewave.com (used to be stingray).
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thanks roel but I was hoping to implement a basic version myself - I would use something like you have surgested but it is not going to be a comercial product so would not warrent me spending that much money on it.
But sill the website you gave me is good for research - thanks again.
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Ok in that case I'd write a custom control myself, either using win32 sdk, mfc or wtl, what you're most comfortable with. That would mean handling all the hit-testing, dragging, selections etc manually. I have once written something similar to what you want to do, using different windows for the 'items' in the view but that wasn't the right way to do it. I started redoing it by drawing directly on the custom control but I never finished that (we bought the roguewave thing).
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Hi,
I'm trying to write a .NET-dll with Visual C++. Always I want to use fopen I get this error:
file error LNK2001: Nichtaufgelöstes externes Symbol "struct _iobuf * __cdecl _wfopen(unsigned short const *,unsigned short const *)" (?_wfopen@@$$J0YAPAU_iobuf@@PBG0@Z)
Does anyone know a solution? I must use fopen, because I need a FILE* for an input in an imported C-dll.
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is _wfopen similar to fopen ???
TOXCCT alias Nicolas C.
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_wfopen and fopen are the same. Only the input parameters are different.
FILE *fopen(
const char *filename,
const char *mode
);
FILE *_wfopen(
const wchar_t *filename,
const wchar_t *mode
);
I can use fopen or _wfopen. Always the compiler error occures.
Any solutions?
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no, not at all...
(you certainly included the correct header file, didn't you?)
TOXCCT alias Nicolas C.
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I think I have. Here my .cpp file:
#include "stdafx.h"
#include <stdio.h>
#using <mscorlib.dll>
#include "file.h"
using namespace System;
using namespace System::Runtime::InteropServices;
int file::Class1::createfile()
{
FILE* f = _wfopen(L"C:\\test.test", L"w+");
return 0;
}
And my header-file is:
#pragma once
using namespace System;
namespace file
{
public __gc class Class1
{
public :
int createfile();
};
}
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Does this help?
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Just check in the MSDN what .lib files need to be added for its linking.
I have lost more blood shaving than on the battlefield - Adolf Hitler
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Thanks for reply, but I can't extract the related information I need from MSDN. If I try to make a .NET-application using Visual C++, fopen works great. Only if I want to use that in a .NET-dll it doesn't work. Can anyone correct this code, so it will runnning as a .NET-dll, please?
My header-file:
// file.h
#pragma once
using namespace System;
namespace file
{
public __gc class Class1
{
public :
int createfile();
};
}
My implementation-file:
// file.cpp.
#include "stdafx.h"
#include <stdio.h>
#using <mscorlib.dll>
#include "file.h"
using namespace System;
int file::Class1::createfile()
{
FILE* f = fopen("C:\\test.test", "w+");
fclose(f);
return 0;
}
I'm trying and trying and get no solution. Please, it's important for me.
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Hi,
i need to implement simple database function in a VC++ application,
but i cannot include any database product like Access etc.
So i need to use file-based database, are there any efficient
(fast, robust and reliable) programming technique for implementing
a simple file-based database function?
Thanks
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If it is a really a simple db you can use an array of your db sets as ojects. If it is more maybe you can use the ODBC interface.
Try this @ home. (B&B)
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Have a look at sqlite - http://www.hwaci.com/sw/sqlite/
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