A Simple DLL useful to manage taskbar icons

#include "windows.h"
#include <conio.h>
#include "resource.h"
#include <stdio.h>
#include <process.h>

#include "taskbaricon.h" 

// --------------------------------------------------------------------------
// Define callbacks for managing mouse events on showed icon.
// --------------------------------------------------------------------------
void __stdcall LeftButtonClickHandler(
	char* p_IconNameCurrentlyShowed, 
	int p_x, 
	int p_y
)
{
	char l_Str[MAX_PATH];
	sprintf(
		l_Str,
		"(CurrentIconFrameName: %s) LeftButtonClickHandler mouse coordinates <x,y>==<%u,%u>",
		p_IconNameCurrentlyShowed,
		p_x,
		p_y);

	::MessageBox(
		NULL,
		l_Str,
		"Application Event Handler",
		MB_OK);
}

void __stdcall RightButtonClickHandler(
	char* p_IconNameCurrentlyShowed,
	int p_x, 
	int p_y
)
{
	/*
	char l_Str[MAX_PATH];
	sprintf(
		l_Str,
		"(CurrentIconFrameName: %s) RightButtonClickHandler mouse coordinates <x,y>==<%u,%u>",
		p_IconNameCurrentlyShowed,
		p_x,
		p_y);

	::MessageBox(
		NULL,
		l_Str,
		"Application Event Handler",
		MB_OK);
	*/
}

void __stdcall LeftButtonDoubleClickHandler(
	char* p_IconNameCurrentlyShowed,
	int p_x, 
	int p_y


)
{  
	char l_Str[MAX_PATH];
	sprintf(
		l_Str,
		"(CurrentIconFrameName: %s) LeftButtonDoubleClickHandler mouse coordinates <x,y>==<%u,%u>",
		p_IconNameCurrentlyShowed,
		p_x,
		p_y);


	::MessageBox(
		NULL,
		l_Str,
		"Application Event Handler",
		MB_OK);

}

// ---------------------------------------------------
// Callback for managing user selection on popup menu.
// ---------------------------------------------------
void __stdcall PopupUserActionHandler(int p_MenuItemIdentifier)
{
	char l_Text1[]="Option1";
	char l_Text2[]="Option2";
	char l_Text3[]="Option3";
	char l_Text4[]="Option4";

	char l_Str[MAX_PATH];

	char l_UserChoice[MAX_PATH];
	if (p_MenuItemIdentifier==1)
	{
		strcpy(l_UserChoice,l_Text1);
	}
	else
	if (p_MenuItemIdentifier==2)
	{
		strcpy(l_UserChoice,l_Text2);
	}
	else
	if (p_MenuItemIdentifier==3)
	{
		strcpy(l_UserChoice,l_Text3);
	}
	else
	if (p_MenuItemIdentifier==4)
	{
		strcpy(l_UserChoice,l_Text4);
	}
	else
	{
		// unknown
		strcpy(l_UserChoice,"Unknown");
	}

	sprintf(l_Str,"User selection: %s", l_UserChoice);
	MessageBox(NULL,l_Str,"Popup menu user choice",MB_OK);
}

// --------------------------------------------------------------------------
// User have to press a char to go ahead.
// --------------------------------------------------------------------------
void GetChar(char* p_Text)
{
	printf(p_Text);
	int l_Char = _getch();
}

// --------------------------------------------------------------------------
// Entry point.
// --------------------------------------------------------------------------
int main(int argc, char* argv[])
{
	// Create a "task bar icon" object.
	ITaskBarIcon* l_TaskBarIcon = ITaskBarIcon::Create();

	// Create a set of icons. Each of these icon represent one possible 
	// status (f.i. "Disactivated", "Activated", "Idle", "Working").
	HINSTANCE hInstance = (HINSTANCE) GetModuleHandle (NULL); 
	HICON l_Icon1 = LoadIcon (hInstance, MAKEINTRESOURCE(IDI_ICON1));
	HICON l_Icon2 = LoadIcon (hInstance, MAKEINTRESOURCE(IDI_ICON2));
	HICON l_Icon3 = LoadIcon (hInstance, MAKEINTRESOURCE(IDI_ICON3));
	HICON l_Icon4 = LoadIcon (hInstance, MAKEINTRESOURCE(IDI_ICON4));

	// Set the icon frames to the object.
	l_TaskBarIcon->SetIconFrame(
				"Disactivated", 
				l_Icon1, 
				IDI_ICON1, 
				"Process Disactivated");

	l_TaskBarIcon->SetIconFrame(
				"Activated", 
				l_Icon2, 
				IDI_ICON2, 
				"Process Activated");

	l_TaskBarIcon->SetIconFrame(
				"Idle", 
				l_Icon3, 
				IDI_ICON3, 
				"Process Idle");

	l_TaskBarIcon->SetIconFrame(
				"Working", 
				l_Icon4, 
				IDI_ICON4, 
				"Process Working");


	// ---------------------
	// Set popup menu items.
	// ---------------------
	l_TaskBarIcon->SetPopupMenuItem(
			"Option1", 
			1);

	l_TaskBarIcon->SetPopupMenuItem(
			"Option2", 
			2);

	l_TaskBarIcon->SetPopupMenuItem(
			"Option3", 
			3);

	l_TaskBarIcon->SetPopupMenuItem(
			"Option4", 
			4);

	// ----------------------------------------------------------------------
	// Set various event handlers.
	// ----------------------------------------------------------------------
	l_TaskBarIcon->SetLeftButtonClickHandler(
						LeftButtonClickHandler);
	l_TaskBarIcon->SetRightButtonClickHandler(
						RightButtonClickHandler);
	l_TaskBarIcon->SetLeftButtonDoubleClickHandler(
						LeftButtonDoubleClickHandler);

	// Handler for getting user selection on icon popup menu.
	l_TaskBarIcon->SetPopupHandler(PopupUserActionHandler);

	// ----------------------------------------------------------------------
	// Start and show the initial icon.
	// ----------------------------------------------------------------------
	GetChar("Press a key to show an icon on the taskbar\n");
	
	l_TaskBarIcon->Start("Disactivated");
	GetChar("Press a key to change icon status\n");

	// ----------------------------------------------------------------------
	// Change the hicon appearence according to certain events.
	// ----------------------------------------------------------------------

	//...

	l_TaskBarIcon->ChangeIconFrame("Idle");
	GetChar("Press a key to change icon status\n");

	//...

	l_TaskBarIcon->ChangeIconFrame("Activated");
	GetChar("Press a key to change icon status\n");
	
	//...

	l_TaskBarIcon->ChangeIconFrame("Working");
	GetChar("Press a key to change icon status\n");

	//...

	l_TaskBarIcon->ChangeIconFrame("Idle");
	GetChar("Press a key to change icon status\n");

	//...

	l_TaskBarIcon->ChangeIconFrame("Disactivated");
	
	//...

	// ----------------------------------------------------------------------
	// Release the "task bar icon" object.
	// ----------------------------------------------------------------------
	GetChar("Press a key to make the icon disappear from the taskbar\n");
	l_TaskBarIcon->Stop();
	
	l_TaskBarIcon->Release();

	GetChar("Press a key to exit\n");

	return 0;
}