悲催，偶画图如何就出错

悲催，偶画图怎么就出错？
代码如下：  

C/C++ code

this->Gc->SetBrushColor(TRgb(0,0,0,255));//this->Gc->Clear();this->Gc->SetPenColor(TRgb(255,25,255,120));this->Gc->SetBrushStyle(CGraphicsContext::ESolidBrush);this->Gc->SetBrushColor(TRgb(25,50,255,255));//注意这里的 TRect 无论我把第二个参数该为何值，绘制出来的矩形始终处于最上面，也就是Y轴坐标始终无法改动this->Gc->DrawRoundRect(TRect(0,125,260,30),TSize(RoundW,RoundH));TFontSpec fontSpec;fontSpec.iHeight=120;fontSpec.iFontStyle.SetStrokeWeight(EStrokeWeightNormal);CFont* pFont = NULL;CEikonEnv::Static()->ScreenDevice()->GetNearestFontInTwips(pFont, fontSpec);this->Gc->SetBrushColor(TRgb(55,25,255,255));this->Gc->SetPenColor(TRgb(55,125,125,255));_LIT(Hello,"Coding is Fucking Fuckable!");this->Gc->UseFont(pFont);//这里，我意向中想要在GC的任意位置绘制文字，但如同上面绘制矩形一样，根本行不通～this->Gc->DrawText(Hello,TRect(0,0,260,30),20,CGraphicsContext::ECenter);//this->Gc->Clear();return 1;