Creo que esto te servira, lo que hace es pintar las FixedRows y FixedColumms en Negro y la celda seleccionada en Amarillo, va en el evento OnDrawCell del StringGrid.
void __fastcall TForm1::StringGrid1DrawCell(TObject *Sender, int ACol,
int ARow, TRect &Rect, TGridDrawState State)
{
TStringGrid* Grilla = static_cast<TStringGrid*>(Sender);
TCanvas *canvas = dynamic_cast<TStringGrid*>(Sender)->Canvas;
TRect r(Rect);
canvas->Font=Grilla->Font;
//Aqui pinta las celdas Fixed
if(ACol==0 || ARow==0)
{
canvas->Brush->Color = clBlack;
}
//Aqui las Seleccionadas.
if(State.Contains(gdSelected))
{
canvas->Font->Color = clWindow;
canvas->Brush->Color = clYellow;
}
canvas->FillRect(r);
DrawText(canvas->Handle, StringGrid1->Cells[ARow][ACol].c_str(), StringGrid1->Cells[ARow][ACol].Length(), &r,DT_LEFT);
}
O si lo que quieres es cambiar el color de una celda de acuerdo a su contenido puedes hacer esto:
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
StringGrid1->Cells[2][1] = "rojo";
StringGrid1->Cells[3][1] = "verde";
StringGrid1->Cells[2][2] = "celeste";
StringGrid1->Cells[2][3] = "Azul";
}
//---------------------------------------------------------------------------
void __fastcall TForm1::StringGrid1DrawCell(TObject *Sender, int ACol,
int ARow, TRect &Rect, TGridDrawState State)
{
if ((ACol>0) && (ARow>0))
{
if (StringGrid1->Cells[ACol][ARow] == "rojo")
StringGrid1->Canvas->Brush->Color = clRed;
else if (StringGrid1->Cells[ACol][ARow] == "verde")
StringGrid1->Canvas->Brush->Color = clGreen;
else if (StringGrid1->Cells[ACol][ARow] == "celeste")
StringGrid1->Canvas->Brush->Color = clAqua;
else if (StringGrid1->Cells[ACol][ARow] == "Azul")
StringGrid1->Canvas->Brush->Color = clBlue;
else
StringGrid1->Canvas->Brush->Color = clBlack;
StringGrid1->Canvas->FillRect(Rect);
StringGrid1->Canvas->TextOut(Rect.Left,Rect.Top,StringGrid1->Cells[ACol][ARow]); }
}
//---------------------------------------------------------------------------
Haber si era lo que necesitabas.
Saludos!!!
