TCheckBoxオブジェクトのチェック状態を設定する

例:

//---------------------------------------------------------------------------
void __fastcall SetCheckBoxState(TCheckBox* ACheckBox, TCheckBoxState AState)
{
        switch(AState) {
        case cbChecked:
                SendMessage(ACheckBox->Handle, BM_SETCHECK, BST_CHECKED, 0);
                break;
        case cbUnchecked:
                SendMessage(ACheckBox->Handle, BM_SETCHECK, BST_UNCHECKED, 0);
                break;
        case cbGrayed:
                SendMessage(ACheckBox->Handle, BM_SETCHECK, BST_INDETERMINATE, 0);
                break;
        }
}
//---------------------------------------------------------------------------