C / C++ / MFC

11-Aug-07 20:56

Hi,

While skinning a dialog, i could not able to display 24-bit color bitmaps. Any suggestions please..

With Regards,
Sangeetha.

Mark Salsbery12-Aug-07 7:16

Mark Salsbery

12-Aug-07 7:16

Sangeetha_J wrote:
i could not able to display 24-bit color bitmaps

Why not? Errors? Exceptions? How are you rendering the bitmaps?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Sangeetha_J12-Aug-07 18:12

12-Aug-07 18:12

Hi,

I designed the image in photoshop and saved it as a .bmp image.. How use it as a skin to a dialog.

With Regards,
Sangeetha.

Mark Salsbery12-Aug-07 20:01

Mark Salsbery

12-Aug-07 20:01

An easy way is to draw the bitmap to the dialog in response to the WM_ERASEBKGND message.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Hamid_RT12-Aug-07 8:12

12-Aug-07 8:12

More explain will be helpful to get answer.

WhiteSky

Sangeetha_J12-Aug-07 18:15

12-Aug-07 18:15

Hi Whitesky,

I want to use skin on a dialog.. For that i designed the image using photoshop and saved it as a .bmp image. But how to use it as a skin is my problem. Its not at all getting displayed.. But if i try with 16-bit color bitmap it is getting displayed.. do i have to use some other methods to display it?

With Regards,
Sangeetha.

Hamid_RT12-Aug-07 19:37

12-Aug-07 19:37

Can you show your code,please?(not full code)

WhiteSky

Sangeetha_J12-Aug-07 22:25

12-Aug-07 22:25

Hi, Following is my code..

<br />
HBITMAP m_hBmp;<br />
HRGN m_hClientRgn;<br />
HRGN m_hWndRgn;<br />
HICON m_hIcon;<br />
COLORREF m_colorBk;<br />
<br />
HRGN DIBToRgn(HBITMAP hBmp,COLORREF BkColor,BOOL Direct); // Handle the Skin<br />
<br />
char drive1[_MAX_DIR];<br />
<br />
BEGIN_MESSAGE_MAP(CFormDlg, CDialog)<br />
	//{{AFX_MSG_MAP(CFormDlg)		<br />
		ON_WM_ERASEBKGND()<br />
		ON_WM_PAINT()<br />
		ON_WM_QUERYDRAGICON()<br />
	//}}AFX_MSG_MAP<br />
END_MESSAGE_MAP()<br />
<br />
/////////////////////////////////////////////////////////////////////////////<br />
<br />
BOOL CFormDlg::OnInitDialog() <br />
{<br />
<br />
	CDialog::OnInitDialog();<br />
	<br />
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);<br />
	m_hBmp=(HBITMAP)LoadImage(AfxGetApp()->m_hInstance,MAKEINTRESOURCE(IDB_BITMAP2),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);<br />
	m_hClientRgn=CreateEllipticRgn(933,934,934,935);<br />
	m_hWndRgn=DIBToRgn(m_hBmp,0x00ff00,FALSE);<br />
	m_colorBk = 0x00000000;<br />
	<br />
	return TRUE;  // return TRUE unless you set the focus to a control<br />
	              // EXCEPTION: OCX Property Pages should return FALSE<br />
}<br />
<br />
HRGN CFormDlg ::DIBToRgn(HBITMAP hBmp, COLORREF BkColor, BOOL Direct)<br />
{<br />
	// use to return the handle of the HGRN<br />
  	HRGN hRgn = NULL;					<br />
	#define MAX_ALLOC_RECTS  100<br />
	//the difference of the color<br />
	COLORREF  Tolerance=0x00101010;<br />
	if (hBmp)<br />
	{<br />
		//creat the dib to save the dc<br />
		HDC hMemDC = CreateCompatibleDC(NULL);		<br />
		if (hMemDC)<br />
		{<br />
			BITMAP bm;<br />
			//get the info of the bitmap<br />
			GetObject(hBmp, sizeof(bm), &bm);	<br />
<br />
			BITMAPINFOHEADER BmpInfoh = {					//the struct of the bitmap<br />
					sizeof(BITMAPINFOHEADER),			// biSize<br />
					bm.bmWidth,					// biWidth;<br />
					bm.bmHeight,					// biHeight;<br />
					1,						// biPlanes;<br />
					32,						// biBitCount<br />
					BI_RGB,						// biCompression;<br />
					0,						// biSizeImage;<br />
					0,						// biXPelsPerMeter;<br />
					0,						// biYPelsPerMeter;<br />
					0,						// biClrUsed;<br />
					0						// biClrImportant;<br />
			};<br />
			//design a void point to point to the bitmap<br />
			LPVOID pBit32; <br />
			//creat a DIB<br />
			HBITMAP hDib32 = CreateDIBSection(hMemDC, <br />
					(BITMAPINFO *)&BmpInfoh, <br />
					DIB_RGB_COLORS, &pBit32, NULL, 0);<br />
			if (hDib32)<br />
			{<br />
				//copy dib to DC<br />
				HBITMAP hOldib32 = (HBITMAP)SelectObject(hMemDC, hDib32);<br />
				// create a DC to save orgin bitmap<br />
				HDC hDC = CreateCompatibleDC(hMemDC);<br />
				if (hDC)<br />
				{<br />
					BITMAP bm32;<br />
					// get the new 34 bit Dib size<br />
					GetObject(hDib32, sizeof(bm32), &bm32);<br />
					//make sure the 32Dib's every line pilex's is 4 's times<br />
					while (bm32.bmWidthBytes % 4)<br />
						bm32.bmWidthBytes++;<br />
					//copy the orginal dib to DC<br />
					HBITMAP holdBmp = (HBITMAP)SelectObject(hDC, hBmp);<br />
					//copy dib to memory DC<br />
					BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY);<br />
					DWORD MaxRects = MAX_ALLOC_RECTS;<br />
					SYSTEM_INFO  Sysinfo;<br />
					//get memory size<br />
					GetSystemInfo(&Sysinfo);<br />
					//make a stack which can chang big<br />
					//alloct memory<br />
					HANDLE hRcData=HeapCreate(HEAP_GENERATE_EXCEPTIONS,Sysinfo.dwPageSize, 0);<br />
					RGNDATA * pRcData=(RGNDATA*)HeapAlloc(hRcData,HEAP_ZERO_MEMORY,<br />
						sizeof(RGNDATAHEADER)+sizeof(RECT)*MaxRects);<br />
					 //fill the the RGNDATA struck<br />
					pRcData->rdh.dwSize = sizeof(RGNDATAHEADER);<br />
					pRcData->rdh.iType = RDH_RECTANGLES;<br />
					pRcData->rdh.nCount = pRcData->rdh.nRgnSize = 0;<br />
					SetRect(&pRcData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);<br />
		             		BYTE hr,hg,hb,lr,lg,lb;<br />
					switch(BkColor)<br />
					{<br />
					case RGB(255,255,255):	//if the bkcolor is white<br />
						hr = GetRValue(BkColor);<br />
						hg = GetGValue(BkColor);<br />
						hb = GetBValue(BkColor);<br />
						lr = min(0xff, hr - GetRValue(Tolerance));<br />
						lg = min(0xff, hg - GetGValue(Tolerance));<br />
						lb = min(0xff, hb - GetBValue(Tolerance));<br />
						break;<br />
					case RGB(0,0,0):	//if the bkcolor is black<br />
						lr = GetRValue(BkColor);<br />
						lg = GetGValue(BkColor);<br />
						lb = GetBValue(BkColor);<br />
						hr = min(0xff, lr + GetRValue(Tolerance));<br />
						hg = min(0xff, lg + GetGValue(Tolerance));<br />
						hb = min(0xff, lb + GetBValue(Tolerance));<br />
						break;<br />
					default:		//if the bkcolor is other color<br />
						Tolerance=0x111111;<br />
						lr =max(0, GetRValue(BkColor)-GetRValue(Tolerance));<br />
						lg = max(0,GetGValue(BkColor)-GetGValue(Tolerance));<br />
						lb = max(0,GetBValue(BkColor)-GetBValue(Tolerance));<br />
						hr=min(0xff,GetRValue(BkColor)+GetRValue(Tolerance));<br />
						hg=min(0xff,GetGValue(BkColor)+GetGValue(Tolerance));<br />
						hb=min(0xff,GetBValue(BkColor)+GetBValue(Tolerance));<br />
						break;<br />
					}<br />
					// Get the bit point and do the search<br />
					BYTE *pBits = (BYTE *)bm32.bmBits + (bm32.bmHeight - 1) * bm32.bmWidthBytes;<br />
					for (int y = 0; y < bm.bmHeight; y++)<br />
					{<br />
						for (int x = 0; x < bm.bmWidth; x++)<br />
						{<br />
							int x0 = x;<br />
							DWORD *pColor = (DWORD *)pBits + x;<br />
							BYTE dr,dg,db;<br />
							while (x < bm.bmWidth)<br />
							{<br />
								dr=GetRValue(*pColor);<br />
								dg=GetGValue(*pColor);<br />
								db=GetBValue(*pColor);<br />
<br />
								if ((dr>= lr && dr<= hr)&&(dg>=lg&&dg<=hg)&&(db>=lb&&db<=hb))<br />
								{<br />
									if(Direct)<br />
										break;<br />
									else<br />
									{<br />
										pColor++;<br />
										x++;<br />
									}<br />
							  	}<br />
								else if(Direct)<br />
								{<br />
									pColor++;<br />
									x++;<br />
								}<br />
								else<br />
									break;<br />
<br />
							}<br />
							if (x > x0)<br />
							{<br />
								if (pRcData->rdh.nCount >= MaxRects)<br />
								{<br />
									MaxRects += MAX_ALLOC_RECTS;<br />
									//re alloc the stack<br />
									pRcData=(RGNDATA*)HeapReAlloc(<br />
									hRcData,HEAP_ZERO_MEMORY,pRcData, <br />
									sizeof(RGNDATAHEADER)+sizeof(RECT)*MaxRects);<br />
								}<br />
								RECT *pr = (RECT *)&pRcData->Buffer;<br />
								SetRect(&pr[pRcData->rdh.nCount], x0, y, x, y+1);<br />
								pRcData->rdh.rcBound.left = x0;<br />
								pRcData->rdh.rcBound.top = y;<br />
								pRcData->rdh.rcBound.right = x;<br />
								pRcData->rdh.rcBound.bottom = y+1;<br />
								pRcData->rdh.nCount++;<br />
<br />
								if (pRcData->rdh.nCount == 3000)<br />
								{	<br />
									HRGN tmphRgn = ExtCreateRegion(NULL,<br />
									sizeof(RGNDATAHEADER) + (sizeof(RECT) * MaxRects),<br />
									pRcData);<br />
									if (hRgn)<br />
									{<br />
										CombineRgn(hRgn, hRgn, tmphRgn, RGN_OR);<br />
										DeleteObject(tmphRgn);<br />
									}<br />
									else<br />
										hRgn = tmphRgn;<br />
									pRcData->rdh.nCount = 0;<br />
									SetRect(&pRcData->rdh.rcBound, <br />
									MAXLONG, MAXLONG, 0, 0);<br />
								}<br />
							}<br />
						}<br />
<br />
						// search next line<br />
						pBits -= bm32.bmWidthBytes;<br />
					}<br />
					HRGN tmphRgn = ExtCreateRegion(NULL, <br />
							sizeof(RGNDATAHEADER) + (sizeof(RECT) * MaxRects), pRcData);<br />
					if (hRgn)<br />
					{<br />
						CombineRgn(hRgn, hRgn, tmphRgn, RGN_OR);<br />
						DeleteObject(tmphRgn);<br />
					}<br />
					else<br />
						hRgn = tmphRgn;<br />
					// make a rect ,use this rect xor to the  BkColor<br />
					//then we can get the rect we want<br />
					if(!Direct)<br />
					{<br />
						HRGN hRect=CreateRectRgn(0,0,bm.bmWidth,bm.bmHeight);<br />
				                        if(hRect)<br />
						{<br />
							CombineRgn(hRgn,hRgn,hRect,RGN_XOR);<br />
							DeleteObject(hRect);<br />
						}<br />
					    else<br />
							return NULL;<br />
					}<br />
					//release the memory<br />
					HeapFree(hRcData,HEAP_NO_SERIALIZE,pRcData);<br />
					SelectObject(hDC, holdBmp);<br />
					DeleteDC(hDC);<br />
					DeleteObject(holdBmp);<br />
				}<br />
				SelectObject(hMemDC,hOldib32);<br />
				DeleteDC(hMemDC);<br />
				DeleteObject(hOldib32);<br />
				DeleteObject(hDib32);<br />
			}<br />
			else<br />
				DeleteDC(hMemDC);<br />
		}<br />
	}<br />
	return hRgn;<br />
}<br />
<br />
BOOL CFormDlg::OnEraseBkgnd(CDC* pDC) <br />
{<br />
	if(m_hBmp)<br />
	{<br />
		BITMAP bm;<br />
		GetObject(m_hBmp,sizeof(bm),&bm);<br />
		HDC hMemdc=CreateCompatibleDC(pDC->m_hDC); <br />
		if(hMemdc)<br />
		{<br />
		   HBITMAP hOldBmp=(HBITMAP)SelectObject(hMemdc,m_hBmp);<br />
		   if(hOldBmp)<br />
		   {<br />
			   BitBlt(pDC->m_hDC,0,0,bm.bmWidth,bm.bmHeight,hMemdc,0,0,SRCCOPY);<br />
			   SelectObject(hMemdc,hOldBmp);<br />
			   DeleteDC(hMemdc);<br />
			   DeleteObject(hOldBmp);<br />
			   return TRUE;<br />
		   }<br />
		   else<br />
			 DeleteDC(hMemdc);<br />
		}<br />
	}<br />
	return CDialog::OnEraseBkgnd(pDC);<br />
	return FALSE;<br />
}<br />
<br />
void CFormDlg::OnPaint() <br />
{<br />
	if (IsIconic())<br />
	{<br />
		CPaintDC dc(this); // Gerätekontext für Zeichnen<br />
<br />
		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);<br />
<br />
		// Symbol in Client-Rechteck zentrieren<br />
		int cxIcon = GetSystemMetrics(SM_CXICON);<br />
		int cyIcon = GetSystemMetrics(SM_CYICON);<br />
		CRect rect;<br />
		GetClientRect(&rect);<br />
		int x = (rect.Width() - cxIcon + 1) / 2;<br />
		int y = (rect.Height() - cyIcon + 1) / 2;<br />
<br />
		// Symbol zeichnen<br />
		dc.DrawIcon(x, y, m_hIcon);<br />
	}<br />
	else<br />
	{<br />
		CDialog::OnPaint();<br />
	}<br />
}<br />
<br />
<br />
HCURSOR CFormDlg::OnQueryDragIcon()<br />
{<br />
	return (HCURSOR) m_hIcon;<br />
}<br />

With Regards,
Sangeetha.

Hamid_RT12-Aug-07 23:06

12-Aug-07 23:06

I said you dont want to show a simple bitmap on the dialog I think these articles are helpful for you.;)
Skins in a Dialog Based Application[^]
Using Skins Without MFC[^]
CDialogSK - A Skinnable Dialog Class[^]

WhiteSky

Sangeetha_J14-Aug-07 0:59

14-Aug-07 0:59

Hi Whitesky,

Thank u very much.. it works.. the wrong thing i was doing is i didnt use the import option while creating a new bitmap resource in the resource editor.

Thank you,

With Regards,
Sangeetha.

Hamid_RT14-Aug-07 6:18