Taskbar Notification Dialog

John O'Byrne

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11 Jul 20023 min read

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A MSN IM-style popup notification dialog

Introduction

A few weeks ago, I saw an MSN messenger popup class on CodeProject written by Prateek Kaul. Since I needed a taskbar popup with skin support, I decided to write my own new class.

This is my first submission to Codeproject, since I think my code begins to be mature enough to be posted.

Compatibility

This class needs MFC to be either statically or dynamically linked in your project; it has been written, compiled and tested under Visual Studio .NET (but should work with VC6).

How to Use the Class

The class is very easy to use: Just add TaskbarNotifier.h and TaskbarNotifier.cpp into your project, then include TaskbarNotifier.h into your application, add a CTaskbarNotifier member variable in the header file of your Dialog or Window class.

In the OnInitDialog or OnCreate member functions, add the following lines:

C++

m_wndTaskbarNotifier.Create(this);
m_wndTaskbarNotifier.SetSkin(IDB_MY_BITMAP_RESOURCE);
m_wndTaskbarNotifier.SetTextFont("Arial",90,TN_TEXT_NORMAL,TN_TEXT_UNDERLINE);
m_wndTaskbarNotifier.SetTextColor(RGB(0,0,0),RGB(0,0,200));
m_wndTaskbarNotifier.SetTextRect(CRect(10,40,m_wndTaskbarNotifier1.m_nSkinWidth-10,
                                 m_wndTaskbarNotifier1.m_nSkinHeight-25));

Then when you want to show the popup animation, just call anywhere m_wndTaskNotifier.Show("Text to display"); this will show the animation of the window appearing and then disappearing. You can call again the Show() method whenever you want. If the popup was still here, the text is just replaced, if it was disappearing, it maximizes again.

Be sure not to allocate the CTaskbarNotifier each time you want to show a message, because the skinning function takes a little CPU time to generate the region used to make a non rectangular window.

Class Documentation

C++

int Create(CWnd *pWndParent);

Creates the popup window which remains hidden until Show() is called.

C++

BOOL SetSkin(UINT nBitmapID,short red=-1,short green=-1,short blue=-1);
BOOL SetSkin(LPCTSTR szFileName,short red=-1,short green=-1,short blue=-1);

Those two functions assign a skin to the popup, they take as parameter either a Bitmap resource ID or the path of a bitmap file.

The optional parameters are the RGB values for the transparency color for the bitmap. Use these parameters only if you want a non rectangular window; if these parameters are left blank, no Region is created.

C++

void SetTextFont(LPCTSTR szFont,int nSize,int nNormalStyle,int nSelectedStyle);

This function permits to specify the Font used for displaying the text (two styles are possible, one for the normal state and one when the mouse is over the window)

nNormalStyle or nSelectedStyle can be one or a combination of these parameters:

TN_TEXT_NORMAL
TN_TEXT_BOLD
TN_TEXT_ITALIC
TN_TEXT_UNDERLINE

C++

void SetTextColor(COLORREF crNormalTextColor,COLORREF crSelectedTextColor);

This function sets the color of the text when in normal or selected state.

C++

void SetTextRect(RECT rcText);

This function allows to define a rectangle within the bitmap which will be the clipping zone for displaying the text.

C++

void Show(LPCTSTR szCaption,DWORD dwTimeToShow=800,DWORD dwTimeToStay=3000,
           DWORD dwTimeToHide=500,int nIncrement=1);

Displays the popup window animation:

szCaption: Text to display
dwTimeToShow: Duration in milliseconds for the popup to be fully visible
dwTimeToStay: Duration in milliseconds for the popup to be stay visible
dwTimeToHide: Time in millisecond for the popup to completely disappear
nIncrement: Pixel increment for moving the window during the animation (the higher, the faster)

Show can be called even if the popup is already visible, being hiding or showing.

C++

void Hide();

Manually hides the popup.

Additional Notes

When the user clicks on the popup, a message is being sent to its parent window (WM_TASKBARNOTIFIERCLICKED defined in TaskbarNotifier.h), you can intercept it by adding in your Message Map macro:

C++

ON_MESSAGE(WM_TASKBARNOTIFIERCLICKED,OnTaskbarNotifierClicked)

The fact I'm not releasing the HRGN handle is because when you call SetWindowRgn() function, the GDI takes care of the object deletion.

Conclusion

Thanks to Prateek Kaul whose code inspired me to write this class and to Vander Nunes for his article about skinning a window.

I hope this class will be useful to you, if you find any memory or GDI leaks, please let me know. If you have suggestions to enhance the functionalities of this class, please post a comment.

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.

A list of licenses authors might use can be found here.

Written By

John O'Byrne

Web Developer

United States

I live in Santa Clara CA and work as a software engineer for SAP Business Objects.

My areas of expertise are user interface developments in Eclipse RCP / SWT / Draw 2D and C#

Comments and Discussions

Re: Fix small problem when TaskBar Notifier occupy focus of MainFrame

jaxclin8811-Jun-07 21:41

jaxclin88

11-Jun-07 21:41

I have tried this solution. I think you can only change SW_SHOW to SW_SHOWNOACTIVATE. It works fine.

switch (m_nAnimStatus)
{
case IDT_HIDDEN:
ShowWindow(SW_SHOWNOACTIVATE);

CYL

For ATL use?

kimi_roy14-Jul-05 23:57

kimi_roy

14-Jul-05 23:57

Since ATL program can't use some MFC base classes. Therefore,when I include "TaskBarNotifier.cpp" and "TaskBarNotifier.h" will occur "CWnd" class not defined. Confused | :confused:

Should I re-write them Dead | X|

or someone have another idea to solve this problem?

If Taskbar is in autohide Mode

KarstenK29-Jun-05 23:58

KarstenK

29-Jun-05 23:58

then you got the Dialog on the lower right side, whether the taskbar is on another position. Suspicious | :suss:

To solve that problem I was looking for Dead | X|

Now I found SHAppBarMessage() in the MSDN and it works Cool | :cool:

Try this @ home. (B&B)

Use "SelectFolder" should beware of Drive Volumn Name

Evan Lin5-Jun-05 22:55

Evan Lin

5-Jun-05 22:55

When I want to sync TreeList to exist tree.
I found the SelectFolder will add redondancy folder
ex: D: and D:\SourceDriver

The root cause of this problem is this function.
void CFolderTreeCtrl::AddDrive(char drivePathName[])
To use this AddDriver() with Volume name
It should beware of when you want to SelectFolder on your own procedure.

If you don't want add volumn name, it should be modify as

void CFolderTreeCtrl::AddDrive(char drivePathName[])<br />
{<br />
	char newDrive[100], volumeName[100];<br />
	<br />
	if(GetVolumeName(drivePathName, volumeName))<br />
	sprintf(newDrive, "%c: [%s]", drivePathName[0], volumeName);<br />
	else	<br />
        GetVolumeName(drivePathName, volumeName);<br />
        sprintf(newDrive, "%c:", drivePathName[0]);<br />
<br />
	DrawChildren(InsertChildFolder(newDrive, TVI_ROOT));<br />
}

to prevent set the volumn name in TreeList and Can not find volune name in other procedure.

Or~~ you should take care volumn Name yourself, if you want use SelectFlder in your program. Cool | :cool:

fade-in/out instead of sliding?

flashyjigga16-May-05 4:49

flashyjigga

16-May-05 4:49

is there a way to make the popup fade in and out instead of sliding up and down? i'm pretty new to c++ gui programming, so i just wanted to know if this was even possible. any hints on how to do it if it is possible would be great also. thanks.

Re: fade-in/out instead of sliding?

Dean Hallman28-Jun-05 11:24

Dean Hallman

28-Jun-05 11:24

You can change the opacity of windows. Ie. timer that increases opacity will produce fade in effect. The sticky notes application has an opacity menu on its notes:

http://www.codeproject.com/wtl/stickynotes.asp

WTL Version?

Dean Hallman9-May-05 5:45

Dean Hallman

9-May-05 5:45

Is there a WTL version of the Taskbar Notifier?

Rama Krishna Vavilala said in a previous post for this article that he had done such a port, link is broken though. Is that port still available?

Thanks,
Dean

Re: WTL Version?

WTL Student6-Jun-05 13:44

WTL Student

6-Jun-05 13:44

I actually went through the conversion. so here is the result.

<br />
//	http://www.codeproject.com/dialog/taskbarnotifier.asp<br />
//	Taskbar Notification dialog<br />
// CTaskbarNotifier Header file<br />
// By John O'Byrne - 05 July 2002<br />
<br />
#ifndef __INC_TASKBARNOTIFIER_H__<br />
#define __INC_TASKBARNOTIFIER_H__<br />
<br />
#define WM_TASKBARNOTIFIERCLICKED	WM_USER+123<br />
#define TN_TEXT_NORMAL			0x0000<br />
#define TN_TEXT_BOLD			0x0001<br />
#define TN_TEXT_ITALIC			0x0002<br />
#define TN_TEXT_UNDERLINE		0x0004<br />
<br />
// CTaskbarNotifier<br />
<br />
struct CTaskbarNotifier : CWindowImpl<CTaskbarNotifier, CWindow, CWinTraits<WS_POPUP> ><br />
{<br />
	enum<br />
	{<br />
		IDT_HIDDEN			= 0,<br />
		IDT_APPEARING		= 1,<br />
		IDT_WAITING			= 2,<br />
		IDT_DISAPPEARING	= 3,<br />
<br />
		TASKBAR_ON_TOP		= 1,<br />
		TASKBAR_ON_LEFT		= 2,<br />
		TASKBAR_ON_RIGHT	= 3,<br />
		TASKBAR_ON_BOTTOM	= 4,<br />
	};<br />
<br />
	CTaskbarNotifier()<br />
	{<br />
		m_strCaption = _T("");<br />
		m_bMouseIsOver=FALSE;<br />
		m_hSkinRegion=NULL;<br />
		m_hCursor=NULL;<br />
		m_crNormalTextColor=RGB(133,146,181);<br />
		m_crSelectedTextColor=RGB(10,36,106);<br />
		m_nSkinHeight=0;<br />
		m_nSkinWidth=0;<br />
<br />
		m_dwTimeToShow=0;<br />
		m_dwTimeToLive=0;<br />
		m_dwTimeToHide=0;<br />
		m_dwDelayBetweenShowEvents=0;<br />
		m_dwDelayBetweenHideEvents=0;<br />
		m_nStartPosX=0;<br />
		m_nStartPosY=0;<br />
		m_nCurrentPosX=0;<br />
		m_nCurrentPosY=0;<br />
		m_nIncrement=2;<br />
		m_nTaskbarPlacement=0;<br />
		m_nAnimStatus=IDT_HIDDEN;<br />
		m_rcText.SetRect(0,0,0,0);<br />
	}<br />
<br />
	~CTaskbarNotifier()<br />
	{<br />
		// No need to delete the HRGN,  SetWindowRgn() owns it after being called<br />
	}<br />
<br />
	void Show(LPCTSTR szCaption,DWORD dwTimeToShow=200,DWORD dwTimeToLive=3000,DWORD dwTimeToHide=200,int nIncrement=1)<br />
	{<br />
		unsigned int nDesktopHeight;<br />
		unsigned int nDesktopWidth;<br />
		unsigned int nScreenWidth;<br />
		unsigned int nScreenHeight;<br />
		CRect rcDesktop;<br />
<br />
		m_strCaption	= szCaption;<br />
		m_dwTimeToShow	= dwTimeToShow;<br />
		m_dwTimeToLive	= dwTimeToLive;<br />
		m_dwTimeToHide	= dwTimeToHide;<br />
<br />
		::SystemParametersInfo(SPI_GETWORKAREA,0,&rcDesktop,0);<br />
		nDesktopWidth=rcDesktop.right-rcDesktop.left;<br />
		nDesktopHeight=rcDesktop.bottom-rcDesktop.top;<br />
		nScreenWidth=::GetSystemMetrics(SM_CXSCREEN);<br />
		nScreenHeight=::GetSystemMetrics(SM_CYSCREEN);<br />
<br />
		BOOL bTaskbarOnRight=nDesktopWidth<nScreenWidth && rcDesktop.left==0;<br />
		BOOL bTaskbarOnLeft=nDesktopWidth<nScreenWidth && rcDesktop.left!=0;<br />
		BOOL bTaskBarOnTop=nDesktopHeight<nScreenHeight && rcDesktop.top!=0;<br />
		//BOOL bTaskbarOnBottom=nDesktopHeight<nScreenHeight && rcDesktop.top==0;<br />
<br />
		switch (m_nAnimStatus)<br />
		{<br />
			case IDT_HIDDEN:<br />
				ShowWindow(SW_SHOW);<br />
				if (bTaskbarOnRight)<br />
				{<br />
					m_dwDelayBetweenShowEvents=m_dwTimeToShow/(m_nSkinWidth/m_nIncrement);<br />
					m_dwDelayBetweenHideEvents=m_dwTimeToHide/(m_nSkinWidth/m_nIncrement);<br />
					m_nStartPosX=rcDesktop.right;<br />
					m_nStartPosY=rcDesktop.bottom-m_nSkinHeight;<br />
					m_nTaskbarPlacement=TASKBAR_ON_RIGHT;<br />
				}<br />
				else if (bTaskbarOnLeft)<br />
				{<br />
					m_dwDelayBetweenShowEvents=m_dwTimeToShow/(m_nSkinWidth/m_nIncrement);<br />
					m_dwDelayBetweenHideEvents=m_dwTimeToHide/(m_nSkinWidth/m_nIncrement);<br />
					m_nStartPosX=rcDesktop.left-m_nSkinWidth;<br />
					m_nStartPosY=rcDesktop.bottom-m_nSkinHeight;<br />
					m_nTaskbarPlacement=TASKBAR_ON_LEFT;<br />
				}<br />
				else if (bTaskBarOnTop)<br />
				{<br />
					m_dwDelayBetweenShowEvents=m_dwTimeToShow/(m_nSkinHeight/m_nIncrement);<br />
					m_dwDelayBetweenHideEvents=m_dwTimeToHide/(m_nSkinHeight/m_nIncrement);<br />
					m_nStartPosX=rcDesktop.right-m_nSkinWidth;<br />
					m_nStartPosY=rcDesktop.top-m_nSkinHeight;<br />
					m_nTaskbarPlacement=TASKBAR_ON_TOP;<br />
				}<br />
				else //if (bTaskbarOnBottom)<br />
				{<br />
					// Taskbar is on the bottom or Invisible<br />
					m_dwDelayBetweenShowEvents=m_dwTimeToShow/(m_nSkinHeight/m_nIncrement);<br />
					m_dwDelayBetweenHideEvents=m_dwTimeToHide/(m_nSkinHeight/m_nIncrement);<br />
					m_nStartPosX=rcDesktop.right-m_nSkinWidth;<br />
					m_nStartPosY=rcDesktop.bottom;<br />
					m_nTaskbarPlacement=TASKBAR_ON_BOTTOM;<br />
				}<br />
<br />
				m_nCurrentPosX=m_nStartPosX;<br />
				m_nCurrentPosY=m_nStartPosY;<br />
<br />
				SetTimer(IDT_APPEARING,m_dwDelayBetweenShowEvents);<br />
				break;<br />
<br />
			case IDT_WAITING:<br />
				RedrawWindow();<br />
				KillTimer(IDT_WAITING);<br />
				SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
				break;<br />
<br />
			case IDT_APPEARING:<br />
				RedrawWindow();<br />
				break;<br />
<br />
			case IDT_DISAPPEARING:<br />
				KillTimer(IDT_DISAPPEARING);<br />
				SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
				if (bTaskbarOnRight)<br />
					m_nCurrentPosX=rcDesktop.right-m_nSkinWidth;<br />
				else if (bTaskbarOnLeft)<br />
					m_nCurrentPosX=rcDesktop.left;<br />
				else if (bTaskBarOnTop)<br />
					m_nCurrentPosY=rcDesktop.top;<br />
				else //if (bTaskbarOnBottom)<br />
					m_nCurrentPosY=rcDesktop.bottom-m_nSkinHeight;<br />
<br />
				SetWindowPos(NULL,m_nCurrentPosX,m_nCurrentPosY,m_nSkinWidth,m_nSkinHeight,SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOACTIVATE);<br />
				RedrawWindow();<br />
				break;<br />
		}<br />
	}<br />
<br />
<br />
	void Hide()<br />
	{<br />
		switch (m_nAnimStatus)<br />
		{<br />
		case IDT_APPEARING:<br />
			KillTimer(IDT_APPEARING);<br />
			break;<br />
		case IDT_WAITING:<br />
			KillTimer(IDT_WAITING);<br />
			break;<br />
		case IDT_DISAPPEARING:<br />
			KillTimer(IDT_DISAPPEARING);<br />
			break;<br />
		}<br />
		MoveWindow(0,0,0,0);<br />
		ShowWindow(SW_HIDE);<br />
		m_nAnimStatus=IDT_HIDDEN;<br />
	}<br />
<br />
	BOOL SetSkin(UINT nBitmapID,short red=-1,short green=-1,short blue=-1)<br />
	{<br />
		BITMAP bm;<br />
<br />
		if (m_biSkinBackground)<br />
			m_biSkinBackground.DeleteObject();<br />
<br />
		if (!m_biSkinBackground.LoadBitmap(nBitmapID))<br />
			return FALSE;<br />
		GetObject(m_biSkinBackground, sizeof(bm), &bm);<br />
		m_nSkinWidth=bm.bmWidth;<br />
		m_nSkinHeight=bm.bmHeight;<br />
		m_rcText.SetRect(0,0,bm.bmWidth,bm.bmHeight);<br />
<br />
		if (red!=-1 && green!=-1 && blue!=-1)<br />
		{<br />
			// No need to delete the HRGN,  SetWindowRgn() owns it after being called<br />
			m_hSkinRegion=GenerateRegion((HBITMAP)m_biSkinBackground,(BYTE) red,(BYTE) green,(BYTE) blue);<br />
			SetWindowRgn(m_hSkinRegion, true);<br />
		}<br />
<br />
		return TRUE;<br />
	}<br />
<br />
	BOOL SetSkin(LPCTSTR szFileName,short red=-1,short green=-1,short blue=-1)<br />
	{<br />
		BITMAP bm;<br />
		HBITMAP hBmp;<br />
<br />
		hBmp=(HBITMAP) ::LoadImage(_Module.m_hInst,szFileName,IMAGE_BITMAP,0,0, LR_LOADFROMFILE);<br />
		if (!hBmp)<br />
			return FALSE;<br />
<br />
		m_biSkinBackground.Attach(hBmp);<br />
		GetObject(m_biSkinBackground, sizeof(bm), &bm);<br />
		m_nSkinWidth=bm.bmWidth;<br />
		m_nSkinHeight=bm.bmHeight;<br />
		m_rcText.SetRect(0,0,bm.bmWidth,bm.bmHeight);<br />
<br />
		if (red!=-1 && green!=-1 && blue!=-1)<br />
		{<br />
			// No need to delete the HRGN,  SetWindowRgn() owns it after being called<br />
			m_hSkinRegion=GenerateRegion((HBITMAP)m_biSkinBackground,(BYTE) red,(BYTE) green,(BYTE) blue);<br />
			SetWindowRgn(m_hSkinRegion, true);<br />
		}<br />
<br />
		return TRUE;<br />
	}<br />
<br />
	void SetTextFont(LPCTSTR szFont,int nSize,int nNormalStyle,int nSelectedStyle)<br />
	{<br />
		LOGFONT lf;<br />
		if (m_myNormalFont)<br />
			m_myNormalFont.DeleteObject();<br />
		m_myNormalFont.CreatePointFont(nSize,szFont);<br />
		m_myNormalFont.GetLogFont(&lf);<br />
<br />
		// We  set the Font of the unselected ITEM<br />
		if (nNormalStyle & TN_TEXT_BOLD)<br />
			lf.lfWeight = FW_BOLD;<br />
		else<br />
			lf.lfWeight = FW_NORMAL;<br />
<br />
		if (nNormalStyle & TN_TEXT_ITALIC)<br />
			lf.lfItalic=TRUE;<br />
		else<br />
			lf.lfItalic=FALSE;<br />
<br />
		if (nNormalStyle & TN_TEXT_UNDERLINE)<br />
			lf.lfUnderline=TRUE;<br />
		else<br />
			lf.lfUnderline=FALSE;<br />
<br />
		if (m_myNormalFont)<br />
			m_myNormalFont.DeleteObject();<br />
		m_myNormalFont.CreateFontIndirect(&lf);<br />
<br />
		// We set the Font of the selected ITEM<br />
		if (nSelectedStyle & TN_TEXT_BOLD)<br />
			lf.lfWeight = FW_BOLD;<br />
		else<br />
			lf.lfWeight = FW_NORMAL;<br />
<br />
		if (nSelectedStyle & TN_TEXT_ITALIC)<br />
			lf.lfItalic=TRUE;<br />
		else<br />
			lf.lfItalic=FALSE;<br />
<br />
		if (nSelectedStyle & TN_TEXT_UNDERLINE)<br />
			lf.lfUnderline=TRUE;<br />
		else<br />
			lf.lfUnderline=FALSE;<br />
<br />
		if (m_mySelectedFont)<br />
			m_mySelectedFont.DeleteObject();<br />
		m_mySelectedFont.CreateFontIndirect(&lf);<br />
	}<br />
<br />
<br />
	void SetTextColor(COLORREF crNormalTextColor,COLORREF crSelectedTextColor)<br />
	{<br />
		m_crNormalTextColor=crNormalTextColor;<br />
		m_crSelectedTextColor=crSelectedTextColor;<br />
		RedrawWindow();<br />
	}<br />
<br />
	void SetTextRect(RECT rcText)<br />
	{<br />
		m_rcText = rcText;<br />
	}<br />
<br />
	CFont		m_myNormalFont;<br />
	CFont		m_mySelectedFont;<br />
	COLORREF	m_crNormalTextColor;<br />
	COLORREF	m_crSelectedTextColor;<br />
	HCURSOR		m_hCursor;<br />
<br />
	CBitmap		m_biSkinBackground;<br />
	HRGN		m_hSkinRegion;<br />
	CRect		m_rcText;<br />
<br />
	CString		m_strCaption;<br />
<br />
 	DWORD		m_dwTimeToShow;<br />
	DWORD		m_dwTimeToLive;<br />
	DWORD		m_dwTimeToHide;<br />
	DWORD		m_dwDelayBetweenShowEvents;<br />
	DWORD		m_dwDelayBetweenHideEvents;<br />
<br />
	int			m_nSkinWidth		: 16;<br />
	int			m_nSkinHeight		: 16;<br />
	int			m_nStartPosX		: 16;<br />
	int			m_nStartPosY		: 16;<br />
	int			m_nCurrentPosX		: 16;<br />
	int			m_nCurrentPosY		: 16;<br />
	BOOL		m_bMouseIsOver		: 1;<br />
	int			m_nAnimStatus		: 4;<br />
	int			m_nTaskbarPlacement	: 4;<br />
	int			m_nIncrement		: 8;<br />
<br />
protected:<br />
	BYTE* Get24BitPixels(HBITMAP pBitmap, WORD *pwWidth, WORD *pwHeight)<br />
	{<br />
		BITMAP bmpBmp;<br />
		LPBITMAPINFO pbmiInfo;<br />
		BITMAPINFO bmiInfo;<br />
		WORD wBmpWidth, wBmpHeight;<br />
<br />
		GetObject(pBitmap, sizeof(bmpBmp),&bmpBmp);<br />
		pbmiInfo   = (LPBITMAPINFO)&bmpBmp;<br />
<br />
		wBmpWidth  = (WORD)pbmiInfo->bmiHeader.biWidth;<br />
		wBmpWidth  = (WORD)(wBmpWidth - (wBmpWidth%4));<br />
		wBmpHeight = (WORD)pbmiInfo->bmiHeader.biHeight;<br />
<br />
		*pwWidth  = wBmpWidth;<br />
		*pwHeight = wBmpHeight;<br />
<br />
		BYTE *pPixels = new BYTE[wBmpWidth*wBmpHeight*3];<br />
		if (!pPixels) return NULL;<br />
<br />
		HDC hDC =::GetWindowDC(NULL);<br />
<br />
		bmiInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);<br />
		bmiInfo.bmiHeader.biWidth = wBmpWidth;<br />
		bmiInfo.bmiHeader.biHeight = -wBmpHeight;<br />
		bmiInfo.bmiHeader.biPlanes = 1;<br />
		bmiInfo.bmiHeader.biBitCount = 24;<br />
		bmiInfo.bmiHeader.biCompression = BI_RGB;<br />
		bmiInfo.bmiHeader.biSizeImage = wBmpWidth*wBmpHeight*3;<br />
		bmiInfo.bmiHeader.biXPelsPerMeter = 0;<br />
		bmiInfo.bmiHeader.biYPelsPerMeter = 0;<br />
		bmiInfo.bmiHeader.biClrUsed = 0;<br />
		bmiInfo.bmiHeader.biClrImportant = 0;<br />
<br />
		// get pixels from the original bitmap converted to 24bits<br />
		int iRes = GetDIBits(hDC,pBitmap,0,wBmpHeight,(LPVOID)pPixels,&bmiInfo,DIB_RGB_COLORS);<br />
<br />
		// release the device context<br />
		::ReleaseDC(NULL,hDC);<br />
<br />
		// if failed, cancel the operation.<br />
		if (!iRes)<br />
		{<br />
			delete pPixels;<br />
			return NULL;<br />
		};<br />
<br />
		// return the pixel array<br />
		return pPixels;<br />
	}<br />
<br />
	HRGN GenerateRegion(HBITMAP hBitmap, BYTE red, BYTE green, BYTE blue)<br />
	{<br />
		WORD wBmpWidth,wBmpHeight;<br />
		HRGN hRgn, hTmpRgn;<br />
<br />
		// 24bit pixels from the bitmap<br />
		BYTE *pPixels = Get24BitPixels(hBitmap, &wBmpWidth, &wBmpHeight);<br />
		if (!pPixels) return NULL;<br />
<br />
		// create our working region<br />
		hRgn = CreateRectRgn(0,0,wBmpWidth,wBmpHeight);<br />
		if (!hRgn)<br />
		{<br />
			delete pPixels;<br />
			return NULL;<br />
		}<br />
<br />
		DWORD p=0;<br />
		for (WORD y=0; y<wBmpHeight; y++)<br />
		{<br />
			for (WORD x=0; x<wBmpWidth; x++)<br />
			{<br />
				BYTE jRed   = pPixels[p+2];<br />
				BYTE jGreen = pPixels[p+1];<br />
				BYTE jBlue  = pPixels[p+0];<br />
<br />
				if (jRed==red && jGreen==green && jBlue==blue)<br />
				{<br />
					// remove transparent color from region<br />
					hTmpRgn = CreateRectRgn(x,y,x+1,y+1);<br />
					CombineRgn(hRgn, hRgn, hTmpRgn, RGN_XOR);<br />
					DeleteObject(hTmpRgn);<br />
				}<br />
<br />
				// next pixel<br />
				p+=3;<br />
			}<br />
		}<br />
<br />
		// release pixels<br />
		delete []pPixels;<br />
<br />
		// return the region<br />
		return hRgn;<br />
	}<br />
<br />
protected:<br />
	BEGIN_MSG_MAP(CTaskbarNotifier);<br />
		switch( uMsg )<br />
		{<br />
		case WM_CREATE:		lResult = OnCreate(); return TRUE;<br />
		case WM_MOUSEMOVE:	OnMouseMove(wParam, lParam); break;<br />
		case WM_ERASEBKGND:	lResult = OnEraseBkgnd( (HDC)wParam ); return TRUE;<br />
		case WM_PAINT:		OnPaint(); return TRUE;<br />
		case WM_MOUSELEAVE: OnMouseLeave(); return TRUE;<br />
		case WM_MOUSEHOVER: OnMouseHover(); return TRUE;<br />
		case WM_SETCURSOR:	lResult = OnSetCursor((HWND)wParam, LOWORD(lParam), HIWORD(lParam)); return TRUE;<br />
		case WM_LBUTTONUP:	OnLButtonUp(wParam, lParam); break;<br />
		case WM_TIMER:		OnTimer(wParam); break;<br />
		}<br />
	END_MSG_MAP()<br />
<br />
public:<br />
	int OnCreate()<br />
	{<br />
		if (DefWindowProc() == -1)<br />
			return -1;<br />
<br />
		m_hCursor = ::LoadCursor(NULL, IDC_HAND);<br />
		return 0;<br />
	}<br />
<br />
	BOOL OnSetCursor(CWindow wnd, UINT nHitTest, UINT message)<br />
	{<br />
		if (nHitTest == HTCLIENT)<br />
		{<br />
			::SetCursor(m_hCursor);<br />
			return TRUE;<br />
		}<br />
		return DefWindowProc();<br />
	}<br />
<br />
	void OnMouseMove(UINT nFlags, CPoint point)<br />
	{<br />
		TRACKMOUSEEVENT t_MouseEvent;<br />
		t_MouseEvent.cbSize      = sizeof(TRACKMOUSEEVENT);<br />
		t_MouseEvent.dwFlags     = TME_LEAVE | TME_HOVER;<br />
		t_MouseEvent.hwndTrack   = m_hWnd;<br />
		t_MouseEvent.dwHoverTime = 1;<br />
<br />
		::_TrackMouseEvent(&t_MouseEvent);<br />
	}<br />
<br />
	void OnLButtonUp(UINT nFlags, CPoint point)<br />
	{<br />
		CWindow(GetParent()).PostMessage(WM_TASKBARNOTIFIERCLICKED,0,0);<br />
	}<br />
<br />
	void OnMouseHover()<br />
	{<br />
		if (m_bMouseIsOver==FALSE)<br />
		{<br />
			m_bMouseIsOver=TRUE;<br />
			RedrawWindow();<br />
		}<br />
	}<br />
<br />
	void OnMouseLeave()<br />
	{<br />
		if (m_bMouseIsOver==TRUE)<br />
		{<br />
			m_bMouseIsOver=FALSE;<br />
			RedrawWindow();<br />
		}<br />
	}<br />
<br />
	BOOL OnEraseBkgnd(CDCHandle dc)<br />
	{<br />
		CDC memDC;<br />
		HBITMAP hOldBitmap;<br />
		BITMAP bm;<br />
<br />
		memDC.CreateCompatibleDC(dc);<br />
		GetObject(m_biSkinBackground, sizeof(bm), &bm);<br />
		hOldBitmap=memDC.SelectBitmap(m_biSkinBackground);<br />
<br />
		dc.BitBlt(0,0,bm.bmWidth,bm.bmHeight,memDC,0,0,SRCCOPY);<br />
		memDC.SelectBitmap(hOldBitmap);<br />
<br />
		return TRUE;<br />
	}<br />
<br />
	void OnPaint()<br />
	{<br />
		CPaintDC dc(m_hWnd);<br />
		CRect rcClient;<br />
		HFONT pOldFont;<br />
<br />
		if (m_bMouseIsOver)<br />
		{<br />
			dc.SetTextColor(m_crSelectedTextColor);<br />
			pOldFont=dc.SelectFont(m_mySelectedFont);<br />
		}<br />
		else<br />
		{<br />
			dc.SetTextColor(m_crNormalTextColor);<br />
			pOldFont=dc.SelectFont(m_myNormalFont);<br />
		}<br />
<br />
		dc.SetBkMode(TRANSPARENT);<br />
		rcClient.DeflateRect(10,20,10,20);<br />
		if (m_strCaption)<br />
			dc.DrawText(m_strCaption,m_strCaption.GetLength(),m_rcText,DT_CENTER | DT_VCENTER | DT_WORDBREAK | DT_END_ELLIPSIS);<br />
<br />
		dc.SelectFont(pOldFont);<br />
	}<br />
<br />
	void OnTimer(UINT nIDEvent)<br />
	{<br />
		switch (nIDEvent)<br />
		{<br />
		case IDT_APPEARING:<br />
			m_nAnimStatus=IDT_APPEARING;<br />
			switch(m_nTaskbarPlacement)<br />
			{<br />
			case TASKBAR_ON_BOTTOM:<br />
				if (m_nCurrentPosY>(m_nStartPosY-m_nSkinHeight))<br />
					m_nCurrentPosY-=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_APPEARING);<br />
					SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
					m_nAnimStatus=IDT_WAITING;<br />
				}<br />
				break;<br />
			case TASKBAR_ON_TOP:<br />
				if ((m_nCurrentPosY-m_nStartPosY)<m_nSkinHeight)<br />
					m_nCurrentPosY+=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_APPEARING);<br />
					SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
					m_nAnimStatus=IDT_WAITING;<br />
				}<br />
				break;<br />
			case TASKBAR_ON_LEFT:<br />
				if ((m_nCurrentPosX-m_nStartPosX)<m_nSkinWidth)<br />
					m_nCurrentPosX+=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_APPEARING);<br />
					SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
					m_nAnimStatus=IDT_WAITING;<br />
				}<br />
				break;<br />
			case TASKBAR_ON_RIGHT:<br />
				if (m_nCurrentPosX>(m_nStartPosX-m_nSkinWidth))<br />
					m_nCurrentPosX-=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_APPEARING);<br />
					SetTimer(IDT_WAITING,m_dwTimeToLive);<br />
					m_nAnimStatus=IDT_WAITING;<br />
				}<br />
				break;<br />
			}<br />
			SetWindowPos(NULL,m_nCurrentPosX,m_nCurrentPosY,m_nSkinWidth,m_nSkinHeight,SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOACTIVATE);<br />
			//RedrawWindow();<br />
			break;<br />
<br />
		case IDT_WAITING:<br />
			KillTimer(IDT_WAITING);<br />
			SetTimer(IDT_DISAPPEARING,m_dwDelayBetweenHideEvents);<br />
			break;<br />
<br />
		case IDT_DISAPPEARING:<br />
			m_nAnimStatus=IDT_DISAPPEARING;<br />
			switch(m_nTaskbarPlacement)<br />
			{<br />
			case TASKBAR_ON_BOTTOM:<br />
				if (m_nCurrentPosY<m_nStartPosY)<br />
					m_nCurrentPosY+=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_DISAPPEARING);<br />
					Hide();<br />
				}<br />
				break;<br />
			case TASKBAR_ON_TOP:<br />
				if (m_nCurrentPosY>m_nStartPosY)<br />
					m_nCurrentPosY-=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_DISAPPEARING);<br />
					Hide();<br />
				}<br />
				break;<br />
			case TASKBAR_ON_LEFT:<br />
				if (m_nCurrentPosX>m_nStartPosX)<br />
					m_nCurrentPosX-=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_DISAPPEARING);<br />
					Hide();<br />
				}<br />
				break;<br />
			case TASKBAR_ON_RIGHT:<br />
				if (m_nCurrentPosX<m_nStartPosX)<br />
					m_nCurrentPosX+=m_nIncrement;<br />
				else<br />
				{<br />
					KillTimer(IDT_DISAPPEARING);<br />
					Hide();<br />
				}<br />
				break;<br />
			}<br />
			SetWindowPos(NULL,m_nCurrentPosX,m_nCurrentPosY,m_nSkinWidth,m_nSkinHeight,SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOACTIVATE);<br />
			//RedrawWindow();<br />
			break;<br />
		}<br />
	}<br />
};<br />
<br />
#endif  // __INC_TASKBARNOTIFIER_H__<br />
<br />

Re: WTL Version?

Dean Hallman6-Jun-05 17:34

Dean Hallman

6-Jun-05 17:34

Thanks for the code. I'll take a look.

BTW, I noticed a couple of lines were truncated or something.

For example:
struct CTaskbarNotifier : CWindowImpl >

Should be CWindowImpl<...........>?

Also,
BOOL bTaskbarOnRight=nDesktopWidth BOOL bTaskbarOnLeft=nDesktopWidth BOOL bTaskBarOnTop=nDesktopHeight //BOOL

Are there some missing ';' or something?

Anyway, thanks for your response and the code!
Dean

Help

Member 172672019-Mar-05 18:49

Member 1726720

19-Mar-05 18:49

Well its awesome!!How can i do the same thing in ASP is there any script or how !! OMG | :OMG:

Ahmad Hussain

Can you convert this to a component?

Mr. Say_how_it_is18-Mar-05 5:51

Mr. Say_how_it_is

18-Mar-05 5:51

Can you convert this code to a nice component that can be used in other .NET projects?

Oliver

Re: Can you convert this to a component?

John O'Byrne18-Mar-05 7:33

John O'Byrne

18-Mar-05 7:33

http://www.codeproject.com/cs/miscctrl/taskbarnotifier.asp Smile | :)

Re: Can you convert this to a component?

Mr. Say_how_it_is19-Mar-05 7:27

Mr. Say_how_it_is

19-Mar-05 7:27

Awesome! Thanks for pointing this one out to me. Smile | :)

Popup parent (fixed)

Max Santos31-Dec-04 5:06

Max Santos

31-Dec-04 5:06

I have made some changes to your class, however the changes are to much to post here,

Solved problem:
- Popup didn’t appear if the main window application was not visible, (ie: minimized)
This was corrected by changing the parent of the popup, now the parent is the tray icon window
Messages get send to the application by sending the messages to a pointer "m_pMsgReceiver"
This is transparent to the developer because the parent change is made inside the constructor.
By doing this, the popup no longer "slide" behind the taskbar but on top of it
so i have to change the popup size as it appear or disappear

This change force me to change other thins in the class, making the change to extensive to post here.

If you want to review the changes, drop me a mail. I will send you the code.

"There is no sin in making an error - we all do, and that's how we learn. Sin lies in letting stand an error, once we discover it, without correcting it."
Roger Wright

Re: Popup parent (fixed)

cnss22-Feb-05 9:21

cnss

22-Feb-05 9:21

very good! I need your code, please send it to mdax@sina.com, thanks!

Re: Popup parent (fixed)

Max Santos14-Mar-05 13:00

Max Santos

14-Mar-05 13:00

here : http://xwega.com/downloads/xmessenger.zip[^]

Re: Popup parent (fixed)

alfonsopilato21-Nov-06 16:16

alfonsopilato

21-Nov-06 16:16

Hey Max, not sure if you're still looking at these posts. I've also tested your code by replacing the .ccp and .h of TaskbarNotifier wit the ones in your project. Compiles without a hitch and works fine. The popup comes on top.
I've been reading through this forum and I see how resourceful you bunch are, bringing different ways to solve one common problem. Thank you for sharing your expertise.

Sam.

Re: Popup parent (fixed)

Max Santos14-Mar-05 12:59

Max Santos

14-Mar-05 12:59

Some people have requested the code by mail.
I am happy to send it, but maybe this is a easy way to share it...

Download:
http://xwega.com/downloads/xmessenger.zip[^]

Re: Popup parent (fixed)

boytony25-Sep-05 16:06

boytony

25-Sep-05 16:06

This is just what I am looking for.
You are great! Thank you!

Re: Popup parent (fixed)

Aji Varghese Tera12-May-06 10:48

Aji Varghese Tera

12-May-06 10:48

that's nice......
thanks to both of you.......

m_nIncrement

Max Santos18-Dec-04 8:15

Max Santos

18-Dec-04 8:15

very well done !!

warning:
m_nIncrement is being set to 2 in the constructor
and not being updated with the value passed on in the Show(...)

"There is no sin in making an error - we all do, and that's how we learn. Sin lies in letting stand an error, once we discover it, without correcting it."
Roger Wright

Taskbarnotifier without a dialog

PeteMoody25-Nov-04 2:53

PeteMoody

25-Nov-04 2:53

This code is brilliant, I compiled it with Visual C++ 6 and it works beautifully using the demo app you give.

I'm pretty new to C++ and MFC and have been wrestling with the code for a couple of weeks to try and make it run totally in the background without any associated dialog. I want to use it to pop-up reminders which are automatically run by Windows at certain times of the day.

The Windows scheduler can run the app with a command line parameter including the appropriate reminder text, but I want it to be totally in the background, not to take focus and to simply appear on the screen without altering the user's current application.

I cannot make it do this as it only seems to run when associated with a modal dialog (I tried with modeless but the popup OnTimer didn't work). In the end I used a very small modal dialog box and modified the hide function to exit from the modal loop, but it still takes focus when it is run.

I would really appreciate any pointers you could give on this one.

Kinds regards
Petre

alert window hangs

coolcoolyogs5-Nov-04 13:06

coolcoolyogs

5-Nov-04 13:06

John,
great piece of code !! congrats Smile | :)

btw, i am using your code in a project. I send a windows WM_COPYDATA message to the taskbar notifier process. The function onCopyData() added by me in the class TaskbarNotifier.cpp is invoked on the receipt of the message. Here is the implementation:

BOOL CTaskbarNotifier::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* pCopyDataStruct)
{
CString m_rxText = (LPCSTR)(pCopyDataStruct->lpData);
Show(m_rxText);
return true;
}

The problem i m facing is that sometimes the alert window comes up and hangs and does not hide after 3 secs. It seems to be getting repainted very
frequently. any ideas ? is this problem related to some timer in the application?

please help.

thanks
yogesh

Re: alert window hangs

Member 72341122-Sep-05 3:20

Member 723411

22-Sep-05 3:20

Yes, even i am facing the same problem with an otherwise absolutely stunning app.
At times the notifier windows doesnt gets hidden after the timeout and after some time if there are thousands of notifies then the notifier window itself starts loading slowly.

Any fixes pertaining to these would be highly appreciated.
Thanks,
Rahul

dxcx

below i wanted to say "TopMost", not "focus", sorry again.

dido2k27-Oct-04 11:36

dido2k

27-Oct-04 11:36

below i wanted to say "TopMost", not "focus", sorry again.

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