悲催，偶画图如何就出错

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;