请教textout输出的字符为何老是有背景色？

Question

请教textout输出的字符为何老是有背景色？多谢指点

Answer 1

这样就可以
Graphics::TBitmap *Bmp = new Graphics::TBitmap;
int OldBkMode;
try
{
  Bmp->LoadFromFile("I:\\earth.bmp");
  Form1->Canvas->Draw(0,0,Bmp);
  Form1->Canvas->Font->Color=clRed; //此处必须要否则看不到文字
  Form1->Canvas->Font->Size=12;
  Form1->Canvas->TextOutA(10,20,"Not Transparent!");
  OldBkMode=SetBkMode(Form1->Canvas->Handle, TRANSPARENT);
  Form1->Canvas->TextOut(100, 150, "Transparent!");
  SetBkMode(Handle, OldBkMode);
}
__finally
{
  delete Bmp;
}

Answer 2

canvas.Brush.Style:=bsclear;
  canvas.Font.Color:=clred;
  canvas.TextOut(10,10,'要显示的字符');

Answer 3

同意楼上 cfqdream(软艺)的，
canvas.Brush.Style:=bsclear;
这句最关键！