Class TRbwDataEntry

FOutput: string; See Output.

FDataType: TDataType; See DataType.

FMax: extended; See Max.

FMin: extended; See Min.

FCheckMax: boolean; See CheckMax.

FCheckMin: boolean; See CheckMin.

FOnDataTypeChanged: TNotifyEvent; See OnDataTypeChanged.

FOnExceededBounds: TNotifyEvent; See OnExceededBounds.

FOnExceedingBounds: TNotifyEvent; See OnExceedingBounds.

If the decimal character is a period, the first comma in ANumberString is changed to a period. If the decimal character is a comma, the first period in ANumberString is changed to a comma. If a period or comma is changed, ChangedDecimalPosition is set to the position that changed.

ReadOutput is a string representation of the value represented by Text in which the decimal separator is always a period.

LocalStrToFloat converts Text to a real number.

See DataType.

See Text.

Loaded updates the Text property.

See Text.

SetMax sets the DataType property. It also changes the text to make sure it is consistent with the DataType and updates Output to be consistent with Text. Items[0] and Items[1] are reset to 'False' and 'True' respectively every time the DataType is set to dtBoolean. procedure SetDataType(ADataType: TDataType); virtual; {SetMax changes Max and then calls CheckRange

SetMin changes Min and then calls CheckRange

SetCheckMax changes CheckMax and then if CheckMax is true calls CheckRange

SetCheckMin changes CheckMin and then if CheckMax is true calls CheckRange

DoExit calls the OnExit event; It calls the inherited method and then CheckRange. See DoExit

Change calls the OnChange event; It calls the inherited method and then TextChanged.

DataTypeChanged calls the OnDataTypeChanged event;

ExceedingBounds calls the OnExceedingBounds event;

ExceededBounds calls the OnExceededBounds event;

TextChanged is called before the event handler for the OnChanged event. It checks that the data entered in the TRbwDataEntry is valid. It does not reject '-' even though that is not a valid integer or real number. However, if the text is '-' when OnExit occurs, the CheckRange procedure will catch the error.

ChangeTextToInteger takes the string in the Text property and attempts to convert it to an integer. If it fails, it strips one character at a time from the end of Text until it does succeed. It converts '' to '0'. The end result is a string that can be converted to an integer.

ChangeTextToReal takes the string in the Text property and attempts to convert it to an extended real number. If it fails, it strips one character at a time from the end of Text until it does succeed. It converts '' to '0'. The end result is a string that can be converted to an real number.

Create creates and initializes a TRbwDataEntry instance.

CheckRange is called before the event handler for the OnExit event. It checks that the data in the TRbwDataEntry do not exceed the specified limits. However, it only checks the range if the DataType is dtInteger or dtReal. It also catches the invalid value of '-' for real and integer data typed in the Text field. If the value in the data field should be checked as specified by CheckMin and CheckMax and is outside the limits set by Min and Max an OnExceedingBounds event occurs. If after the event handler for OnExceedingBounds, the numeric representation of Text is still outside the appropriate range, Text will be changed to Max or Min, whichever is closer and calls the OnExceededBounds event.

Set the DataType to an appropriate value to cause the TRbwDataEntry to check that user-entered data is the a ppropriate type.

If CheckMax is true and the DataType is dtInteger or dtReal, the TRbwDataEntry will check the data entered and change it to Max if the entered value is larger than Max. It will also beep and set the focus to the TRbwDataEntry. To modify this behaviour, you can use the OnExceedingBounds or OnExceededBounds events.

If CheckMin is true and the DataType is dtInteger or dtReal, the TRbwDataEntry will check the data entered and change it to Min if the entered value is smaller than Min. It will also beep and set the focus to the TRbwDataEntry. To modify this behaviour, you can use the OnExceedingBounds or OnExceededBounds events.

If CheckMax is true and the DataType is dtInteger or dtReal, the TRbwDataEntry will check the data entered and change it to Max if the entered value is larger than Max. It will also beep and set the focus to the TRbwDataEntry. To modify this behaviour, you can use the OnExceedingBounds or OnExceededBounds events.

If CheckMin is true and the DataType is dtInteger or dtReal, the TRbwDataEntry will check the data entered and change it to Min if the entered value is smaller than Min. It will also beep and set the focus to the TRbwDataEntry. To modify this behaviour, you can use the OnExceedingBounds or OnExceededBounds events.

If the DataType is anything other than dtBoolean, Output will be the same as Text. For dtBoolean, Output is '0' if Text is 'False' and '1' if Text is 'True'. Output is read-only. Output always uses '.' as the decimal separator.

Text is the text that is displayed. Text is identical to original Text property except that setting the text generates an OnChange Event.

Whenever the DataType Property is changed, an OnDataTypeChanged event occurs.

An OnExceededBounds event occurs if 1. the DataType is dtInteger or dtReal and either 2. CheckMax is true and the numeric representation of the Text Property exceeds the Max Property or 3. CheckMin is true and the numeric representation of the Text Property is less than the Min Property. OnExceededBounds occurs after the default handling of such cases has occurred. CheckRange will be called again after your event handler. Be careful that your custom handling does not result in an infinite loop.

An OnExceedingBounds event occurs in the CheckRange procedure if 1. the DataType is dtInteger or dtReal and either 2. CheckMax is true and the numeric representation of the Text Property exceeds the Max Property or 3. CheckMin is true and the numeric representation of the Text Property is less than the Min Property. OnExceedingBounds provides an opportunity for custom handling of such cases before they have been handled automatically. CheckRange will be called again after your event handler. Be careful that your custom handling does not result in an infinite loop.