Question

如何动态设置stringgrid单元格的颜色

Answer 1

你在就OnDrawCell事件中处理就行了，当格子需要重绘时，会自动调用这个事件,如：

void __fastcall TForm1::StringGrid1DrawCell(TObject *Sender, int ACol,
int ARow, TRect &Rect, TGridDrawState State)
{
TStringGrid *sg = dynamic_cast <TStringGrid *>(Sender);
if (!sg) return;

if (ACol == 1 && SameText(sg->Cells[1][ARow], "1"))
sg->Canvas->Brush->Color = clRed;
else
sg->Canvas->Brush->Color = clWhite;

sg->Canvas->FillRect(Rect);

if (State.Contains(gdFocused))
sg->Canvas->Font->Color = clBlue;

sg->Canvas->TextOutA(Rect.Left + 2, Rect.Top + 2, sg->Cells[ACol][ARow]);
}

如果在代码中更改了StringGrid的值，需要刷新，就在更改值以后添加一句：
StringGrid1->Invalidate();