Header Bars in Windows CE Using Win32

#include "stdafx.h"
#include <commctrl.h>

BOOL CreateHeaderRowButtons(HWND hwndHeader, TBBUTTON* pLeft, TBBUTTON* pRight)
{
	if (pLeft == NULL && pRight == NULL)
	{
		ASSERT(FALSE); // you must have either a left or a right button, you cannot have neither
		return FALSE;
	}

	// tell the toolbar the size of the button structure
	SendMessage(hwndHeader, TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);

	// now create an empty button
	TBBUTTON btnEmpty = { -1 /*bitmap*/,0 /*command*/,TBSTATE_INDETERMINATE, TBSTYLE_AUTOSIZE, {0,0} /*reserved*/, 0 /*data*/,-1 /*string*/};
	ZeroMemory(&btnEmpty, sizeof(btnEmpty));
	btnEmpty.iBitmap = -1;
	btnEmpty.idCommand = 0;
	btnEmpty.fsState = TBSTATE_INDETERMINATE;
	btnEmpty.fsStyle = TBSTYLE_AUTOSIZE;
	btnEmpty.dwData = 0;
	btnEmpty.iString = -1;

	// we will have most three buttons at least two buttons.
	TBBUTTON buttons[3];

	int  iCurrentButton = 0;

	// if there is a left button then copy it into the first button index
	if (pLeft != NULL)
	{
		CopyMemory(&buttons[iCurrentButton++], pLeft, sizeof(TBBUTTON));
	}

	// now copy the empty button into either the first index if there is
	// no left button or the middle index if thee is aleft button
	CopyMemory(&buttons[iCurrentButton++], &btnEmpty, sizeof(TBBUTTON));

	// finally copy the right button into the middle index if there
	// is no left button or copy it into the third index if there
	// is a left button.
	if (pRight != NULL)
	{
		CopyMemory(&buttons[iCurrentButton++], pRight, sizeof(TBBUTTON));
	}

	// Now add the 2 or three buttons into the toolbar
	VERIFY(SendMessage(hwndHeader, TB_ADDBUTTONS, iCurrentButton, (LPARAM)&buttons));

	// the final thing left to do then is calulate the size of the
	// middle button based on the sizes of the left and/or right buttons.
	RECT rcLeft;
	ZeroMemory(&rcLeft, sizeof(rcLeft));
	RECT rcRight;
	ZeroMemory(&rcRight, sizeof(rcRight));

	// if there is a left button then get its dimensions.
	// Note that we do not use TBN_GETBUTTONINFO becuase this does
	// not return the correct size. Proberly need to find out why though!
	if (pLeft != NULL)
	{
		VERIFY(SendMessage(hwndHeader, TB_GETITEMRECT, 0, (LPARAM)&rcLeft));
	}
	else
		; // no left bitmap

	// we do the same for the right button if there is one
	if (pRight != NULL)
	{
		VERIFY(SendMessage(hwndHeader, TB_GETITEMRECT, pLeft == NULL ? 1 : 2, (LPARAM)&rcRight));
	}
			
	// Next we get the entire width of the header bar
	RECT rc;
	VERIFY(GetClientRect(hwndHeader, &rc));

	// and calculate and set its size to be the width of the bar less the width of the left and right buttons
	// if the buttons are present.
	TBBUTTONINFO tbiMiddle;
	tbiMiddle.cbSize = sizeof(TBBUTTONINFO);
	tbiMiddle.dwMask = TBIF_SIZE;
	tbiMiddle.cx = (WORD)((rc.right - rc.left) - (rcRight.right - rcRight.left) - (rcLeft.right - rcLeft.left));
	VERIFY(SendMessage(hwndHeader, TB_SETBUTTONINFO, (WPARAM)0, (LPARAM)&tbiMiddle));

	return TRUE;
}

HWND CreateStatusBar(HINSTANCE hInst, HWND hwnd)
{
	RECT rc;
	VERIFY(GetClientRect(hwnd, &rc));
	HWND hwndStatus = CreateWindow(STATUSCLASSNAME, _T("status"), CCS_NOPARENTALIGN | WS_CHILD | WS_VISIBLE,  rc.left, rc.bottom-26-30, rc.right - rc.left, 30, hwnd, NULL, hInst, NULL);
	ASSERT(IsWindow(hwndStatus));

	SendMessage(hwndStatus, SB_SETTEXT, SBT_NOBORDERS, (LPARAM)_T("Status bar text here"));
	
	InvalidateRect(hwndStatus, NULL, TRUE);
	return hwndStatus;
}

HWND CreateHeaderBar(HINSTANCE hInst, HWND hwnd)
{
	RECT rc;
	VERIFY(GetClientRect(hwnd, &rc));

	HWND hwndHeaderControl = CreateWindow(TOOLBARCLASSNAME, _T("Headerbar control"), TBSTYLE_CUSTOMERASE | WS_CHILD | WS_VISIBLE | TBSTYLE_FLAT | TBSTYLE_LIST | WS_BORDER, rc.left, rc.top, rc.right - rc.left, 44, hwnd, NULL, hInst, NULL);
	ASSERT(IsWindow(hwndHeaderControl));
	
	return hwndHeaderControl;
}

void ShowItemSelected(HWND hwndTree, HTREEITEM hti)
{
	if (hti == 0)
	{
		MessageBox(GetForegroundWindow(), _T("User cancelled selection"), _T("Caption"), MB_OK | MB_ICONINFORMATION);
	}
	else
	{
		TCHAR buffer[255];
		LPTSTR lpszStart = _tcscpy(buffer, _T("User selected ")) + 14;
		
		TV_ITEM tvi;
		tvi.mask = TVIF_TEXT;
		tvi.hItem = hti;
		tvi.pszText = lpszStart;
		tvi.cchTextMax = 255;
		VERIFY(TreeView_GetItem(hwndTree, &tvi));
		
		MessageBox(GetForegroundWindow(), buffer, _T("Caption"), MB_OK | MB_ICONINFORMATION);
	}
}