C / C++ / MFC

Re: How to insert a Resizing symbol in the bottom right corner of the window

19-May-09 22:04

The way I've done it in the past is to create a window of class "SCROLLBAR", with style WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | SBS_SIZEBOX | SBS_SIZEGRIP | SBS_SIZEBOXBOTTOMRIGHTALIGN. You then need to override the parent window's OnSize handler to ensure this window is always at the bottom-right of the parent window.

The other wrinkle is that you probably want to override the parent window's OnNcHitTest handler, so that when the mouse is over this window, you can return HTBOTTOMRIGHT to tell the system that it's over the bottom-right corner part of the border (and so the system will display a resizing cursor).

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Hamid_RT20-May-09 0:26

Hamid_RT

20-May-09 0:26

You can use of WM_SIZE for set new location of images.

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Setting the drop down size of a Combo Box

V K 219-May-09 18:44

V K 2

19-May-09 18:44

Hi,
How can I set the drop down size of a Combo Box. ie., When user clicks on the drop down of the Combo box, I need to set the drop down of the combo box so that it can show only 10 items at a time even though there are more than 10 items.

Thanks,

Re: Setting the drop down size of a Combo Box

Chandrasekharan P19-May-09 19:09

Chandrasekharan P

19-May-09 19:09

Check this [^]

Adobe Reader in Java [modified]

snacker219-May-09 15:51

19-May-09 15:51

I am able to get Adobe Acrobat working inside a java JInternalFrame.

However, most of our users don't have a license nor need for Acrobat.

I am trying to get the Adobe Reader ActiveX control to work in java.

I created the "MFC from ActiveX" using the "Adobe PDF Reader <1.0>" control and it is called CAcroAXDocShim by default.

So I create:

CAcroAXDocShim *shim = new CAcroAXDocShim();

I have tried this:
Embed ActiveX controls inside Java GUI[^]

However, hwndChild is always returned as NULL.

It seems like the real problem is the java window which was returned by the JAWT_Win32DrawingSurfaceInfo does not have the ActiveX/OLE controls initialized.

So I tried this:

shim->SubclassWindow( dsi_win->hwnd )

That still fails.

I have also tried this:
Adobe ActiveX Control with MFC[^]

However, I have to render the ActiveX control within an existing java awt component (i.e. an existing HWND). It unfortunately can't create a new Frame.

Is there any way to initialize the HWND returned by the native java awt libraries with ActiveX/OLE support?

Or... better yet... anyone know how to get an ActiveX control like Adobe Reader to display in java?

(perhaps I'm overlooking something; any guidance/comments would be appriciated.)

modified on Wednesday, May 20, 2009 4:00 PM

Stuart Dootson19-May-09 21:51

19-May-09 21:51

How about using Adobe's own JavaBean API for Reader[^]?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

snacker220-May-09 5:41

20-May-09 5:41

I think we looked at this before.
1) it isn't maintained by adobe.
2) it hasn't been updated since 1999
3) does it support flash within the pdf?... I'm checking on this now.
4) we'd like for the users to be able to update their Adobe Reader and have the new features available to them.

I'm going to try it and see if it meets or needs or not.

Stuart Dootson20-May-09 5:58

20-May-09 5:58

Those first two certainly seem like good reasons not to use it Smile | :)

Other pages you've probably already seen, but appear to have (some) relevance - this link (uses SWT, not Swing)[^] or this link (uses Swing, but uses a proprietary tool to generate COM proxies)[^]?

But I'm just Googling - not really answering your question - sorry Frown | :-(

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

snacker220-May-09 6:02

20-May-09 6:02

I haven't seen the SWT article.
I will give that a try.

snacker220-May-09 10:00

20-May-09 10:00

No, the app is a large swing app and it doesn't look like it's possible to mix SWT and Swing/AWT.

I am currently retrying Embed ActiveX controls inside Java GUI[^]

I had to change

HWND hwndChild = ::CreateWindow(...)

CAxWindow* caxw = new CAxWindow( pThreadParam->hwnd );
HWND hwndChild = caxw->Create( pThreadParam->hwnd );

.

However the call to Create(...) fails.
In the debugger it is failing in atlwin.h at ATLASSUME(m_hWnd == NULL);.
The message says "Debug Assertion Failed!"..."Expression: m_hWnd == 0".
But... the pThreadParam->hwnd that is passed in is not null according to the debugger and the printf output.

Any ideas?

snacker220-May-09 10:20

20-May-09 10:20

This looks promising (using the javacom example):

CAxWindow* caxw = new CAxWindow( pThreadParam->hwnd );
HRESULT rslt = caxw-&gt;CreateControl( L"c:\\test.pdf" );

... and commenting out the rest of the code.

But, it appears to be taking up all of the window area such that I can't resize nor minimize it.

snacker221-May-09 3:55

21-May-09 3:55

It's opening in a separate window for some reason.
I can't get it to open inside the parent window.

Any ideas?

snacker220-May-09 6:00

Re: newbie needs help! [modified]

20-May-09 6:00

#3 -> no, it doesn't support flash, so I wouldn't expect it to keep up with future pdf standards.

I tested using "viewing the Adobe Acrobat 7.0 interactive tour"[^] from Adobe's website (referenced in Adobe - Reader : New Features[^].

The pdf looks similar to what Reader and Acrobat display, but the "new features" are not available and I get an "UnknownFilterException" when I attempt to resize.
If I scroll to the bottom I get an "unsupported command" error.

We would much rather get whatever version of Adobe Reader they have installed and have it displayed in the window instead.

So... does anyone know how I can use the HWND from the awt jni to display Adobe Reader?

It appears that the missing piece so far is getting the ActiveX/OLE initialized in the parent window (the HWND of the java awt component we're trying to get Reader to draw in).

newbie needs help!

jonathan warfield19-May-09 12:49

jonathan warfield

19-May-09 12:49

I can't find the bug in this small code fragment.
I copied it straight from the book. It's probably 1 error causing a bunch of error message.

#include "stdafx.h"
#include <iostream>
#include <string>
#include "stdafx.h"
using namespace std;

const int MAX = 3;
struct Person{
string name;
int height;
};

int _tmain(int argc, _TCHAR* argv[])
{
Person p[MAX];
for (int x = 0; x < MAX; x++)
{
cout << "Enter person's name: ";
getline(cin, p[x].name);
cout << "Enter height in inches: ";
cin >> p[x].height;
cin.ignore();
}
cout << "Outputting person data\n";
cout << "======================\n";
for (x = 0; x < MAX; x++)
cout << "Person #" << x + 1 << "'s name is "
<< p[x].name << " and height is ";
<< p[x].height << endl;

return 0;
}

Stuart Dootson19-May-09 12:56

19-May-09 12:56

Please quote your code properly - firstly, select the "Encode HTML tags when pasting" option below the text box and paste your code in, and secondly, please enclose it in <PRE> tags, to display it in a monospaced font.
Try telling us at least some of the error messages

Also - that second #include "stdafx.h" looks wrong. If you're using precompiled headers, the second stdafx.h will cause the compiler and pre-processor to ignore all the #include statements that occur before the #include "stdafx.h"

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

modified on Wednesday, May 20, 2009 11:12 AM

Re: newbie needs help!

Maximilien19-May-09 13:44

Maximilien

19-May-09 13:44

there's a ";" that should not be there at the end of this line :

<< p[x].name << " and height is ";

This signature was proudly tested on animals.

Re: newbie needs help!

David Crow19-May-09 16:07

David Crow

19-May-09 16:07

jonathan warfield wrote:
It's probably 1 error causing a bunch of error message.

Such as?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: newbie needs help!

Sarath C19-May-09 18:32

Sarath C

19-May-09 18:32

jonathan warfield wrote:
for (x = 0; x < MAX; x++)

for visual C++ 2003 onwards, variables defined inside for loopswill not be available outside. either you've to make int x declaration just before the for loop or for teh second for loop define as
for (int x = 0; x < MAX; x++)

jonathan warfield wrote:
<< p[x].name << " and height is ";
<< p[x].height << endl;

Please remove the unnecessary semi column at the end of first statement.

Anywayz start reading your favorite C++ Book Smile | :)

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Menus and MFC

BobInNJ19-May-09 12:19

BobInNJ

19-May-09 12:19

I am trying to understand something about MFC and resource files. By resource files, I mean files that end with the extension .rc. As I understand it, resource files can be used to create Menus and add short cuts. Please consider the following resource file:

<br />
IDR_MAINFRAME MENU<br />
{<br />
	POPUP "&amp;Output Options" {<br />
		MENUITEM "&amp;Create one", IDM_CREATE1<br />
		MENUITEM "create two", IDM_CREATE2<br />
		MENUITEM "create one", IDM_CREATE3<br />
	}<br />
<br />
}<br />
<br />
IDR_MAINFRAME ACCELERATORS PRELOAD MOVEABLE<br />
BEGIN<br />
	"C",   IDM_CREATE1,			VIRTKEY, CONTROL<br />
END<br />

Observe that the string “Create one” is prefixed by an &. The way I read the documentation (I am looking at the book Programming Window by Charles Petzold) the & is suppose to result in the C in Create being underlined. The fact that it is underlined will be a clue to the user that a short cut exists for that menu item. However, the character C is not being underlined. I am wondering what I am missing.

Important note: The book I mentioned above talks about C and developing code using the Windows SDK. The code I am writing is in C++ and it uses MFC. I am thinking that MFC is turning off the underline character.

Thanks

Bob

bob1697219-May-09 12:28

bob16972

19-May-09 12:28

On Windows 2000 and up, the default behavior of underlining is a configuration option. Normally, they won't show underlining until you press the "alt" key.

BobInNJ19-May-09 12:39

BobInNJ

19-May-09 12:39

Bob,

Thanks for the response. Is there way to set it up so that they show up by default? If so, please tell me how.

Thanks

Bob

bob1697220-May-09 9:07

bob16972

20-May-09 9:07

It's usually in the display properties applet (right click on desktop and choose "Properties".

In Windows 2000, select the "Effects" tab and the configuration option is there.

In Windows XP, select the "Appearance" tab and then press the "Effects..." button to bring up the effects dialog. The configuration option is there.

Stuart Dootson19-May-09 12:51

19-May-09 12:51

Try pressing ALT? IIRC, Windows doesn't display the underlines until you press ALT.

Anyway - here's part of the menu code of an MFC SDI project with a classic menubar (selected on the User Interface Features pane of the MFC application wizard). It displays underlines correctly.

IDR_MAINFRAME MENU
BEGIN
	POPUP "&File"
	BEGIN
		MENUITEM "&New\tCtrl+N",                ID_FILE_NEW
		MENUITEM "&Open...\tCtrl+O",            ID_FILE_OPEN
		MENUITEM "&Save\tCtrl+S",               ID_FILE_SAVE
		MENUITEM "Save &As...",                 ID_FILE_SAVE_AS
		MENUITEM SEPARATOR
		MENUITEM "&Print...\tCtrl+P",           ID_FILE_PRINT
		MENUITEM "Print Pre&view",              ID_FILE_PRINT_PREVIEW
		MENUITEM "P&rint Setup...",             ID_FILE_PRINT_SETUP
		MENUITEM SEPARATOR
		MENUITEM "Recent File",                 ID_FILE_MRU_FILE1,GRAYED
		MENUITEM SEPARATOR
		MENUITEM "E&xit",                       ID_APP_EXIT
	END

However, with VS2008, there is a second option for menus, which is "Use a menu bar and toolbar". This uses the menubar that comes with the "MFC Feature Pack" (it's a CMFCMenuBar[^]). This menubar doesn't appear to display underlines on the menubar (but does on the menu popups).

I hope this information clears up your issue...

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p