creating bitmap fonts

  

//-------------------------- Structures/Classes -----------------------------

struct FNTBMP
{
	HDC			hdc;
	BITMAPINFO	info;
	HBITMAP		Bmp;
	BYTE		*Bits;
};

//---------------------------------------------------------------------------------------------------------

// creates a bitmap and selects into hdc

//---------------------------------------------------------------------------------------------------------

int FntCreateBitmap( int Width, int Height, FNTBMP &BmpInfo )
{
	BmpInfo.hdc = 0;
	////////////////////////////////////////////////////////////////

	// Initialize the fields in the BITMAPINFO structure. 

	BmpInfo.hdc = CreateCompatibleDC(NULL);
	BmpInfo.info.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
	BmpInfo.info.bmiHeader.biWidth = Width;
	BmpInfo.info.bmiHeader.biHeight= Height;
	BmpInfo.info.bmiHeader.biPlanes= 1;
	BmpInfo.info.bmiHeader.biBitCount=24;
	BmpInfo.info.bmiHeader.biCompression=BI_RGB;
	BmpInfo.info.bmiHeader.biSizeImage=Width*Height *3;
	BmpInfo.info.bmiHeader.biXPelsPerMeter= 0;
    BmpInfo.info.bmiHeader.biYPelsPerMeter= 0;
    BmpInfo.info.bmiHeader.biClrUsed		= 0;
    BmpInfo.info.bmiHeader.biClrImportant = 0;


	////////////////////////////////////////////////////////////////

    // Create an offscreen device context:

	BmpInfo.Bmp = CreateDIBSection(BmpInfo.hdc,&BmpInfo.info,DIB_RGB_COLORS,(void**)&BmpInfo.Bits,NULL,NULL);
	if (!BmpInfo.Bmp)
		return(0);

	SelectObject(BmpInfo.hdc, BmpInfo.Bmp);
	SelectObject(BmpInfo.hdc, GetStockObject(BLACK_BRUSH));
	SetStretchBltMode( BmpInfo.hdc, STRETCH_HALFTONE );

	////////////////////////////////////////////////////////////////

	// clear image to black

   	Rectangle(BmpInfo.hdc, 0, 0, Width, Height);
	return(1);
}

//---------------------------------------------------------------------------------------------------------

// deletes a created bitmap and hdc

//---------------------------------------------------------------------------------------------------------

int FntBmpDelete( FNTBMP &Info )
{
	if( Info.Bmp ) DeleteObject( Info.Bmp );	Info.Bmp = 0;
	if( Info.hdc ) DeleteDC( Info.hdc );		Info.hdc = 0;
	return(1);
}

//---------------------------------------------------------------------------------------------------------

// does a clear rect,and draws text

//---------------------------------------------------------------------------------------------------------

int FntBmpTextOut( FNTBMP &Info, int x, int y, LPCTSTR  str )
{
	return(TextOutA(Info.hdc, x,y, str, 1));
}

//---------------------------------------------------------------------------------------------------------

// does a clear rect,and draws text

//---------------------------------------------------------------------------------------------------------

int FntBmpSetFont( FNTBMP &Info , HFONT &fnt )
{
	SelectObject(Info.hdc, fnt);
	SetBkMode(Info.hdc, TRANSPARENT);					// do not fill character background

	SetTextColor(Info.hdc, RGB(255, 255, 255));		// text color white

	return(1);
}