Davide Calabro's CButtonST class port to WTL

CButtonST

Introduction

Now you can use Davide Calabro's excellent CButtonSt class in your ATL/WTL projects. The Class is still called CButtonSt and it retains a majority of the original code. Just follow these simple instructions:

Create a WTL Project
Design the dialog and add the button controls
Add the ButtonST.h header file to your project
Assign a CButtonSt to each button.
In OnInitDialog,
- Subclass each member controls (CButtonST) to each ID using the SubclassWindow method.
- uses the CButtonSt methods to change the appearance of the control.
In your dialog, don't forget to add the macro REFLECT_NOTIFICATIONS which allows the buttons to get messages like WM_DRAWITEM.

  
class MyDialog : public CDialogImpl<MyDialog>
{
  BEGIN_MSG_MAP(MyDialog)
    ...
    MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
    REFLECT_NOTIFICATIONS()
  END_MSG_MAP()
  ...
  LRESULT OnInitDialog(UINT /*uMsg*/, WPARAM /*wParam*/, 
    LPARAM /*lParam*/, BOOL& /*bHandled*/);
  ...
  CButtonST m_btn;
  ...
};

LRESULT MyDialog::OnInitDialog(UINT /*uMsg*/, WPARAM /*wParam*/,
  LPARAM /*lParam*/, BOOL& /*bHandled*/) 
{
  ...
  m_btn.SubclassWindow(GetDlgItem(IDC_BTN));
  m_btn.SetIcon(IDI_EOAPP);
  m_btn.SetFlat(false);
  ...
}

See Davide Calabro's original CButtonSt article for more details.

Latest Updates

26 June 2001
- Updated to Davide Calabro's version 3.2
- Added support for defining the icons from an image list
- Added support for creating dynamically the buttons
14 June 2001 - Fixed a bug in the autorepeat feature

Serge Thank you.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Serge Weinstock

Web Developer

United Kingdom

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THANK YOU!

lzhishen

20:28 17 Sep '10


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SelectObject(pbmpOldBk) Bug

freesindbad

20:59 17 Feb '10

http://www.codeguru.com/forum/archive/index.php/t-250506.html[^]
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Thank you !

flg618730

0:51 24 Nov '09

A good thing!Very perfect!Thank you !
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loading in dialog bar

anubis_ex

10:37 21 Jun '05

cannot load images over dialog bar(CDialogBar control)? why? and if yes..how i could make this?
Sign In·View Thread·Permalink	1.17/5 (3 votes)

Some bugs.

t2di4u

22:45 24 Nov '04

ButtonST(452) rpImage.top += ((rpImage.Height() - dwHeight)/2); When the image's size is larger than the button. For example: if rpImage.Height() = 20 and dwHeight - 21 then rpImage.top = 0x7fffffff. Draw in wrong place!!! and some others work in this way. Fix advice: rpImage.top += ((rpImage.Height()/2 - dwHeight/2)); any way, thanks for your work.
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Another resource leak when using icons

Markus Steinlein

0:05 11 Aug '04

I found another resource leak in the code when using Icons. Icons are loaded from the projects resources using the LoadImage() function. MSDN states that Icons loaded in this way have to be deleted using DestroyIcon(). The FreeResources() method of the CButtonST class uses DeleteObject() instead which leads to a resource leak.

Correct the FreeResources() method to the following to avoid this resource leak:

[...]
if (m_csIcons[0].hIcon != 0) { ::DestroyIcon(m_csIcons[0].hIcon); }
if (m_csIcons[1].hIcon != 0) { ::DestroyIcon(m_csIcons[1].hIcon); }
[...]

yours,
Markus

Port STButton 3.9!

Rodger

5:23 12 May '03

Hey, Any plans to port over the latest ButtonST version?
Sign In·View Thread·Permalink	1.50/5 (4 votes)

Bug, resource leak

John Gijs

0:03 23 Apr '03

I made a rotating button dispaying different bitmaps.
A resource leak was the result.
Analysis learns that the ::GetIconInfo() function
allocates 2 bitmaps that are not deleted by CButtonSt class
(See function CButtonST::SetIcon())
use DeleteObject to correct the error.
(The class was used in an application that controls a 4.000.000 Euro electron beam texturing machine for the largest cold roll mill in Arcelor.)

John.Gijs@Sidmar.arcelor.com

m_bIsFlat - classic appearance and cool behavior

Pablo Aliskevicius

3:57 23 Apr '02

Great stuff!

I'm using it in a 'conventional' looking application - only when the mouse hovers on a button, the text color changes (to light blue). The understatement is, according to a few users, quite cute...

In order to keep the classic look, the only way I found was setting m_bIsFlat to false - by using SetFlat(false), of course. But in OnMouseMove(), I was returning before changing the text color. Commenting out the line "if (!m_bIsFlat) { return 0; };" made the buttons work the way I wanted, but I don't feel comfortable with it.

Is there any other way to do this?

Thanks a lot,

Pablo.

Keyboard Input

Rob Melchione

8:12 25 Jan '02

Hey, Does this class support keyboard input(TAB, SPACE, ENTER, etc...)??? If it does, I must be doing something wrong. I assume that it is not working as a result of the messages being reflected to the button, but I could be wrong. Any help would be apprecitated. Rob Melchione
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terrific article, ... one suggestion :)

partnerinflight

8:50 14 Aug '01

Great article! I'm finding this class immensely useful in my project. One suggestion: would be cool to add custom fonts to the buttons. I see in DrawItem you're just doing DrawText ... so should be pretty simple to add. (I can do it, but ... oh, so lazy.
Sign In·View Thread·Permalink	1.67/5 (2 votes)

error C2065: ImageList_Read and ImageList_Write

Odissey

19:23 20 Jun '01

I have added CButtonST in mine ATL+MFC the project and has received: e:\program files\microsoft visual studio\vc98\wtl\include\atlctrls.h(1585) : error C2065: 'ImageList_Read' : undeclared identifier e:\program files\microsoft visual studio\vc98\wtl\include\atlctrls.h(1590) : error C2065: 'ImageList_Write' : undeclared identifier
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Re: error C2065: ImageList_Read and ImageList_Write

Serge Weinstock

7:23 21 Jun '01

ImageList_Read and ImageList_Write are standard Windows API functions avalaible sin Windows 95 and IE 3.0... There are defined in the header commctrl.h.

Try to check the following points:

Are you using Visual Studio 6 (wtl requires at least VS6)?
Have a look inside the file commctrl.h and look for the declaration of these functions.
What is the value of the macro _WIN32_IE? Try to put:
```
#define _WIN32_IE 0x0300
```
as the first line of your stdafx.h file.

Regards,

Serge Cool | :cool:

Re: error C2065: ImageList_Read and ImageList_Write

Anonymous

22:26 12 Jul '01

I am sorry to say I got the same problem, but I am using vs6 / atl 3.1 win2000.... and I put #define _WIN32_IE 0x0300 in the first line of stdafx.h but it doesnt work...... what can I do ?
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Re: error C2065: ImageList_Read and ImageList_Write

John E

23:51 20 Mar '02

It's the MFC support.. What you can do if you support MFC is to just copy the two prototypes and put them before the WTL-includes in your code. Best regards
Sign In·View Thread·Permalink	2.67/5 (6 votes)

Lockup

Todd Smith

12:50 13 Jun '01

I don't know if this has to do with the button class or the dialog but I was able to get the sample program to lockup by clicking on the "Click and hold pressed" button. I believe I clicked the button and held down the mouse, draged away and then released the button to get it to lockup.
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Re: Lockup

Maximilian Hänel

14:11 13 Jun '01

Yes that's right.
It seems to be fixed with the following modifications in CButtonST::OnLButtonDown():

// unchanged code
// ...
SetCapture();
while(PeekMessage(&csMsg, m_hWnd, WM_LBUTTONUP, WM_LBUTTONUP, PM_REMOVE) == FALSE)
{
	::SendMessage(hWndParent, WM_COMMAND, MAKEWPARAM((WORD)nButtonID, BN_CLICKED), (LPARAM)m_hWnd);
	::Sleep(m_dwPeriodAutoRepeat);
}
 
CPoint ptCursor;
GetCursorPos(&ptCursor);
CRect rcWnd;
GetWindowRect(rcWnd);
if(rcWnd.PtInRect(ptCursor))
	SendMessage(WM_LBUTTONUP);
// ...

Max

Re: Lockup

Serge Weinstock

22:23 13 Jun '01

There are in fact two bugs:

The first one is due to the fact that the mouse has not been captured and so if the user release the mouse button outside the button window, the WM_LBUTTONUP message will never been sent
The second bug is that the icon used when the user relase the mouse button, can be the active icon.

Here it is a simple fix:

LRESULT CButtonST::OnLButtonDown(UINT nFlags, CPoint pt)
{
	DefWindowProc();
	if (m_bAutoRepeat)
		{
		MSG		csMsg;
		int		nButtonID;
		HWND	hWndParent;
		bool	initialState = true;
 
		nButtonID = GetDlgCtrlID();
		hWndParent = GetParent();
		SetCapture();
		while(::PeekMessage(&csMsg, m_hWnd, WM_LBUTTONUP, WM_LBUTTONUP, PM_REMOVE) == FALSE)
			{
			::SendMessage(hWndParent, WM_COMMAND, MAKEWPARAM((WORD)nButtonID, BN_CLICKED), (LPARAM)m_hWnd);
			::Sleep(m_dwPeriodAutoRepeat);
			initialState = !initialState;
			}
		if(!initialState)
			{
			::SendMessage(hWndParent, WM_COMMAND, MAKEWPARAM((WORD)nButtonID, BN_CLICKED), (LPARAM)m_hWnd);
			}
		ReleaseCapture();
		SendMessage(WM_LBUTTONUP);
		CPoint ptCursor;
		::GetCursorPos(&ptCursor);
		ScreenToClient(&ptCursor);
		SendMessage(WM_MOUSEMOVE, 0, MAKELPARAM(ptCursor.x, ptCursor.y));
		}
	return 0;
}

Serge

Great!

Maximilian Hänel

2:07 13 Jun '01

Max
Sign In·View Thread·Permalink	1.00/5 (1 vote)

Thanks!

Davide Calabro

23:06 12 Jun '01

Thanks! I have no words! SoftechSoftware Davide Calabro' davide_calabro@yahoo.com http://members.tripod.com/~SoftechSoftware/index.html
Sign In·View Thread·Permalink	3.00/5 (5 votes)