WinAPI: GetTextAlign - 获取绘图环境的文本对齐方式

//声明:
GetTextAlign(
  DC: HDC;    {设备环境句柄}
): UINT;      {返回对齐选项值; 如果返回 GDI_ERROR 表示设置失败}

//如果调用成功则返回下面常数值之一或它们的组合:
TA_NOUPDATECP = 0;    {每一次文本输出后, 不更新当前位置}
TA_UPDATECP   = 1;    {每一次文本输出后, 更新当前位置}
TA_LEFT       = 0;    {起始于文本外接矩形左边}
TA_RIGHT      = 2;    {起始于文本外接矩形右边}
TA_CENTER     = 6;    {起始于文本外接矩形的水平中心}
TA_TOP        = 0;    {起始于文本外接矩形顶边}
TA_BOTTOM     = 8;    {起始于文本外接矩形底边}
TA_BASELINE   = 24;   {起始于文本基线}
TA_RTLREADING = $100; {文本顺序从右到左, 只对特殊语种}

VTA_BASELINE  = TA_BASELINE; {垂直基线}
VTA_LEFT      = TA_BOTTOM;
VTA_RIGHT     = TA_TOP;
VTA_CENTER    = TA_CENTER;   {垂直居中}
VTA_BOTTOM    = TA_RIGHT;
VTA_TOP       = TA_LEFT;

例子：

//绘画字体
void CDFontEx::DrawText( CDC* pDC, LPCTSTR str, int XPos, int YPos, COLORREF colorref, UINT nFormat)
{
	if( m_pWnd == NULL )
		return;


	if ( CD2DEngine::GetD2DEngine() )
	{
		CD2DEngine::GetD2DEngine()->DrawText(m_pWnd, m_pD2DFont, str, XPos, YPos, colorref, nFormat);
	}
	else
	{
		UINT uOldAlign = 0;
		UINT uNweAlign = 0;
		COLORREF OldColor = pDC->SetTextColor(colorref);
		CFont* pOldFont = pDC->SelectObject(&m_GDIFont);


		if ( nFormat&DT_CENTER )
			uNweAlign |= TA_CENTER;
		else if( nFormat&DT_RIGHT )
			uNweAlign |= TA_RIGHT;
		else
			uNweAlign |= TA_LEFT;


		if( nFormat&DT_BOTTOM )
			uNweAlign |= TA_BOTTOM;
		else 
			uNweAlign |= TA_TOP;


		uOldAlign = pDC->SetTextAlign(uNweAlign);
		
		pDC->TextOut( XPos, YPos, str );
		
		pDC->SetTextColor(OldColor);
		pDC->SetTextAlign(uOldAlign);
		pDC->SelectObject(pOldFont);
	}
}