2:
How can I enlarge the control's edit area

/*
	Copy and paste the following directives to your header file as
	it defines the namespace 'EXCALCLib' for the library: 'ExCalc 1.0 Control Library'

	#import <ExCalc.dll>
	using namespace EXCALCLib;
*/
EXCALCLib::ICalcPtr spCalc1 = GetDlgItem(IDC_CALC1)->GetControlUnknown();
spCalc1->PutEditHeight(32);
spCalc1->PutButtonHeight(32);
spCalc1->PutButtonWidth(32);

1:
How can I change the button's appearance

/*
	Copy and paste the following directives to your header file as
	it defines the namespace 'EXCALCLib' for the library: 'ExCalc 1.0 Control Library'

	#import <ExCalc.dll>
	using namespace EXCALCLib;
*/
EXCALCLib::ICalcPtr spCalc1 = GetDlgItem(IDC_CALC1)->GetControlUnknown();
spCalc1->PutPictureUp(_bstr_t("gBHJJGHA5MIgAEIe4AAAFhyFiC9fa9bDbbABjEZjUbjkdj0fkEhkUjkklk0nlEplUrlktl0vmExmUzmk1m03nE5nU7nkihgAEL5AgBhj/AAsn8JpRABCZAD/BIcJCwU") +
"DBQYIAIILDIWChYaHAACEh8JCxMTERIVGYyXiIeAfQCPEBDRQMbJRUBCRoaHIaHiJaSiYiSGBjZScBKTMpLRAdNreNioWSgZydBZ7CT8BJUdBAUQ7RoODrJKjkJaaKCj" +
"JSdJQVFJKAAlVq2KjqCIoYinHy9HTkVT1FTYUJiPKeHqaOzjLSTNqDXztDSXNhcAJcdKKZo7GCAb6/QADf6lJS4GDCQAAHcBA");
spCalc1->PutPictureDown(_bstr_t("gBHJJGHA5MIgAEIe4AAAFhyFiDYiQBikVi0XjEZjUbjkdj0fkEhkUjkklk0nlEplUrlktl0vmExmUzmk1m03nEhhgAEL5AgBhj/AAsncJoxABCCAD/BIcJCwUDBQYIA") +
"IgLhICBAQCEBgjHSEDBxcJERYAGRqbjIKKjYiKCwfDxUBByUjISQoKaqUi4eQfZKRFoFLw0fBycrMQQ1KreNgYablv4dQZyfjZWaoaKjEBzSxUZQzczOQJMS4SQraeap" +
"ZiqKavHTNdQSFZLTZcUYmBrreorJSrAoDVBdZa2dpaUhwMYGAgAHcBA==");
spCalc1->PutButtonHeight(24);
spCalc1->PutButtonWidth(24);