C / C++ / MFC

KaЯl20-Nov-02 2:19

KaЯl

20-Nov-02 2:19

Use their common ancestor (probably it's the MainFrame, or a ChildFrame for MDI apps)

A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a Cathedral[^].

Antoine de Saint-Exupery (1900-1944)

KarstenK20-Nov-02 2:47

KarstenK

20-Nov-02 2:47

This is the common case of the document view architecture. In the doc should the data-objects (very good for serialization) and with pointers/interfaces to them you get the data which you can disaply in the views. Sleepy | :zzz:

PS: Editing and modifying functions are best implemented in the mainframe so EACH view can access them.

Try this @ home. (B&B)

Simon.W20-Nov-02 3:11

Simon.W

20-Nov-02 3:11

use global pointer

I am seeking...
For what?
Why did you ask me for what? I don't know!

dan o20-Nov-02 5:50

dan o

20-Nov-02 5:50

hi,

Do it via your splitter wnd

CMainFrame::GetInfo()
{
CSplitterWnd* pSplitter = &m_wndSplitter;
ASSERT_VALID( pSplitter );

CWnd *pPaneWnd = pSplitter->GetPane(0, 0);

CLeftView* pTreeView = static_cast<cleftview*>(pPaneWnd);

ASSERT_VALID( pTreeView );
ASSERT_KINDOF( CTreeView, pTreeView );

HTREEITEM hItem;
hItem = pTreeView->GetTreeCtrl().GetSelectedItem();

or

CWnd *pPaneWndTwo = pSplitter->GetPane(0, 1);

CHtmlView* pHtmlView = static_cast<chtmlview*>(pPaneWndTwo);

ASSERT_VALID( pHtmlView );
ASSERT_KINDOF( CHtmlView, pHtmlView );

}

include your HtmlView.h in your file where to call it

hope it helps,

Increase resizing border width....

B4u20-Nov-02 20:23

B4u

20-Nov-02 20:23

hi
u got it exactly right,thts wht i wanted to do.
thx for ur help

bye

Neha20-Nov-02 1:43

Neha

20-Nov-02 1:43

Hi,
Is there anyway to increase the dialog border width?

Regards
Neha

Re: Increase resizing border width....

RuiSantiago20-Nov-02 1:50

RuiSantiago

20-Nov-02 1:50

Use the MoveWindow function

Ex. MoveWindow(&myRect, TRUE);

Re: Increase resizing border width....

Paul M Watt20-Nov-02 6:03

Paul M Watt

20-Nov-02 6:03

You can do that in a number of ways.

1) you can use WM_NCCALCSIZE to recalculate the size of the client area for your window or dialog, by reducing the default size of your client area that will increase the size of the borders.

2) You can handle the WM_NCHITTEST yourself, and return the HTRIGHT, HTBOTTOM etc for all of the border cases, and increase the dimensions that count as the border. This will make all of the other default message handlers act as if the border is wider.

In either of these cases I would handle the WM_NCPAINT message in order to paint and extend the appearance of hte width of the new border that you create.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Increase resizing border width....

Neha20-Nov-02 17:39

Neha

20-Nov-02 17:39

Thanks a lot .

Neha

Uninstall question

Jon Hulatt20-Nov-02 1:36

Jon Hulatt

20-Nov-02 1:36

Hi,

My program can now uninstall itself with a "-u" argument; and it'd invoked by CP->Add/Remove Programs just fine.

My question is, what is the proper way to delete my uninstall app's file itself? I can't delete it because it's locked when i'm running the app.

My only thought is to use HKLM/Software/Microsoft/Windows/CurrentVersion/RunOnce, and a cmd entry to delete the file, but this isn't really very smart. Surely there's a better way? How does installshield do it?

Thanks

Jon

#include <beer.h>

Re: Uninstall question

Navin20-Nov-02 2:39

Navin

20-Nov-02 2:39

There is an MSDN article somewhere about different ways of doing this... but I can't seem to find it at the moment... Confused | :confused:

But anyway - the way to do this consistently on all OSes (9X, NT, 2000, XP), without having to wait for a reboot, is to use a batch file.

Let's say you have an uninstaller called Uninstall.exe. At run-time, right before your uninstaller exits, it should create a batch file in a temp directory somewhere that tries to delete Uninstall.exe, and once it succeeds, deletes itself. Here's an example to get you started (this originally came from an MSDN article, but has been hacked up a little bit Big Grin | :-D

).

Note, you'll want to clean this up, there is no error checking, and some paths/filenames are hard-coded.

<code>
void DeleteThyself()
{
  TCHAR unstFileName[] = "Uninstall.exe";
  TCHAR tempDir[MAX_PATH];

  DWORD error = 0;

  ::GetTempPath(MAX_PATH, tempDir);

  TCHAR batFileName[MAX_PATH];
  _tcscpy(batFileName, tempDir);
  _tcscat(batFileName, "UnstTmp.bat");

  ofstream batchFile(batFileName);

  batchFile << ":Repeat\n";
  batchFile << "del \"" << unstFileName << "\"\n";
  batchFile << "if exist \"" << unstFileName << "\" goto Repeat\n";
  batchFile << "del \"" << batFileName << "\"\n";
  batchFile.close();

  // Now we run the batch file, making sure it is running as a low
  // priority process.
  STARTUPINFO si;
  PROCESS_INFORMATION pi;
  ::ZeroMemory(&si, sizeof(si));
  si.cb = sizeof(si);

  // We want this to be invisible
  si.dwFlags = STARTF_USESHOWWINDOW;
  si.wShowWindow = SW_HIDE;

  // Spawn the batch file with low priority and suspended.
  if(::CreateProcess(NULL, batFileName, NULL, NULL,  FALSE, IDLE_PRIORITY_CLASS, NULL, tempDir, &si, &pi))
  {
    ::SetThreadPriority(pi.hThread,  THREAD_PRIORITY_IDLE);
    return true;
  }
}

Even a broken clock is right twice a day.

Re: Uninstall question

Simon.W20-Nov-02 3:27

Simon.W

20-Nov-02 3:27

DeleteMe.CPP

Module name: DeleteMe.cpp

Written by: Jeffrey Richter

Description: Allows an EXEcutable file to delete itself

********************************************************************/

#include <windows.h>

#include <stdlib.h>

#include <tchar.h>

/////////////////////////////////////////////////////////////////////

int WINAPI WinMain(HINSTANCE h, HINSTANCE b, LPSTR psz, int n) {

// Is this the Original EXE or the clone EXE?

// If the command-line 1 argument, this is the Original EXE

// If the command-line >1 argument, this is the clone EXE

if (__argc == 1) {

// Original EXE: Spawn clone EXE to delete this EXE

// Copy this EXEcutable image into the user's temp directory

TCHAR szPathOrig[_MAX_PATH], szPathClone[_MAX_PATH];

GetModuleFileName(NULL, szPathOrig, _MAX_PATH);

GetTempPath(_MAX_PATH, szPathClone);

GetTempFileName(szPathClone, __TEXT("Del"), 0, szPathClone);

CopyFile(szPathOrig, szPathClone, FALSE);

// Open the clone EXE using FILE_FLAG_DELETE_ON_CLOSE

HANDLE hfile = CreateFile(szPathClone, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE, NULL);

// Spawn the clone EXE passing it our EXE's process handle

// and the full path name to the Original EXE file.

TCHAR szCmdLine[512];

HANDLE hProcessOrig = OpenProcess(SYNCHRONIZE, TRUE, GetCurrentProcessId());

wsprintf(szCmdLine, __TEXT("%s %d \"%s\""), szPathClone, hProcessOrig, szPathOrig);

STARTUPINFO si;

ZeroMemory(&si, sizeof(si));

si.cb = sizeof(si);

PROCESS_INFORMATION pi;

CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi);

CloseHandle(hProcessOrig);

CloseHandle(hfile);

// This original process can now terminate.

} else {

// Clone EXE: When original EXE terminates, delete it

HANDLE hProcessOrig = (HANDLE) _ttoi(__targv[1]);

WaitForSingleObject(hProcessOrig, INFINITE);

CloseHandle(hProcessOrig);

DeleteFile(__targv[2]);

// Insert code here to remove the subdirectory too (if desired).

// The system will delete the clone EXE automatically

// because it was opened with FILE_FLAG_DELETE_ON_CLOSE

}

return(0);

}

I am seeking...
For what?
Why did you ask me for what? I don't know!

Re: Uninstall question

Navin20-Nov-02 7:29

Navin

20-Nov-02 7:29

Code like this was shown in an MSDN article. I think it only works for 9X though.

Even a broken clock is right twice a day.

Restricting mouse pointer to move

suresh_sathya20-Nov-02 1:32

suresh_sathya

20-Nov-02 1:32

i want to make my mouse pointer not to move close to the top of my client area of a window.i should make it to stop below 20 pixels from the top of the client area.how to do it.

Re: Restricting mouse pointer to move

Roger Allen20-Nov-02 2:37

Roger Allen

20-Nov-02 2:37

Take a look at the API function ClipCursor()

Roger Allen
Sonork 100.10016

I have a terminal disease. Its called life!

Re: Restricting mouse pointer to move

Maximilien20-Nov-02 2:38

Maximilien

20-Nov-02 2:38

Yuck!

Why, O, Why ? do people still want to restrict the users ?

Max.

Resources .rc question

Braulio Dez20-Nov-02 0:26

20-Nov-02 0:26

Hi,

I know that I can include in my resources, Bitmaps, Icons, even Metafiles or AVI files...

But... I need to include something... just pieces of text ( something like pages of text), I would like to include that on the resources ( to have it then inside my exe file), and load it from there into an CString object, is that possible ?

For me it would be easier to put that ASCCI formatted text into a resource entry, than having const strings and all that things...

How can I do that ?, thanks greetings
Braulio

RuiSantiago20-Nov-02 0:43

RuiSantiago

20-Nov-02 0:43

I'm not sure about the maximum size of characters in the string table, but maybe you could use it for the purpose!

Then you can load it into a CString like:

CString rr;
rr.LoadString(IDS_STRING);

hope this helps

georgiek5020-Nov-02 1:41

georgiek50

20-Nov-02 1:41

You can definitely do it, just insert the text file as custom give it a name. I don't know how you will load it in MFC but here is what I did for Win32:

static char *pText;
HGLOBAL hResource;

switch(message)
{
case WM_INITDIALOG:
hResource = LoadResource (hInst,
FindResource (hInst, TEXT ("README"), TEXT("TEXT")));

pText = (char *) LockResource(hResource);

return TRUE;

this is from a dialog of mine. The Resource was given a name of "README" and the custom resource type "TEXT"; Then all you have to do is find/load and lock. That's it. Hope this helped.

Braulio Dez20-Nov-02 2:28

20-Nov-02 2:28

Just what I was looking for !, Thanks a lot !

So long
Braulio

Braulio Dez21-Nov-02 1:08

21-Nov-02 1:08

Thanks for the tip !!!

Finally I decide to use Win32, to make an screen saver ( from the sample ballFusion).

Just two more questions, after using the Text ( in the resource), should I free that ? ( I've seen LockResource but donno if it's neccessary to make a call to free that).

And another question... How can I get the handle of the instance in my application, hInst doesn't work because the thing of the screen saver seems to be special, in MFC it was easy something like "AfxGetApp" or other Afx call.

Sorry... I'm novice in Win32.. without sugar ( MFC or ATL) Smile | :)

thanks for your help, greetings
Braulio

georgiek5021-Nov-02 2:47

georgiek50

21-Nov-02 2:47

Well, to tell you the truth, I am just a novice myself. I just did these thing recently so I know about them...If you do not need the text resource anymore then you should call FreeResource. My book says that even if you don't call FreeResource then it will be freed when the program terminates but I think that it's always a good idea to get rid of them when you are done with them. I think you also found a memory leak in my program since I was loading the resource every time I started the dialog and wasn't freeing it so thanks! About the the handle of the instance, there are many ways. What I use a global HINSTANCE hInst for example. In WinMain I set hInst = hInstance but you must set the global handle hInst to hInstance before CreateWindow in WinMain or else it won't work. I also found that out a couple of weeks ago. Other ways are in WM_CREATE you can declare a local HINSTANCE hInst and set it to hInst = ((LPCREATESTRUCT) lParam)->hInstance. Yet another way is GetWindowLong(hwnd, GWL_HINSTANCE). This also straight out of Charles Petzold's Programming Windows, in my opinion a book that everyone should have. Taught me everything I know! Good luck with your program.

Braulio Dez21-Nov-02 2:56