After several hours of investigations and researching the problem, I've found that TFormatSettings returns an incorrect ShortTimeFormat.
To show in TDateTimePicker a short time format with support for 24-hours, I need to use: TDateTimePicker.Format :='H:mm', and this is a default setting for my profile in Windows 10 for a short time.
But TFormatSettings.ShortTimeFormat return me a value of 'h:mm'.
To get the correct value, I should use:
GetLocaleStr(LOCALE_USER_DEFAULT, LOCALE_SSHORTTIME, '');
And this returns a 'H:mm' value.
This is the source of TFormatSettings from SysUtils.pas:
TimePrefix := '';
TimePostfix := '';
if StrToIntDef(GetLocaleStr(Locale, LOCALE_ITLZERO, '0'), 0) = 0 then
HourFormat := 'h'
else
HourFormat := 'hh';
if StrToIntDef(GetLocaleStr(Locale, LOCALE_ITIME, '0'), 0) = 0 then
if StrToIntDef(GetLocaleStr(Locale, LOCALE_ITIMEMARKPOSN, '0'), 0) = 0 then
TimePostfix := ' AMPM'
else
TimePrefix := 'AMPM ';
Result.ShortTimeFormat := TimePrefix + HourFormat + ':mm' + TimePostfix;
Result.LongTimeFormat := TimePrefix + HourFormat + ':mm:ss' + TimePostfix;
As we can see, that always use 'h' or 'hh', no way to get 'H' or 'HH'.
My question is: Why?
Related
I have a problem with translating VHDL to Verilog.
It's part of my source code on VHDL.
With I/O I somehow understood, but have some problems to translate this string
ib1 <= std_logic_vector(to_unsigned(i,ib1'length));
to verilog?
COMPONENT GenerateModel
PORT(
ib1 : IN std_logic_vector(3 downto 0);
);
END COMPONENT;
--Inputs
signal ib1 : std_logic_vector(3 downto 0) := (others => '0');
BEGIN
uut: GenerateModel PORT MAP (
ib1 => ib1,
);
process
begin
for i in 0 to 15 loop
ib1 <= std_logic_vector(to_unsigned(i,ib1'length));
wait for 10 ns;
end loop;
end process;
end;
To extend into Verilog from Paebbels' comment, the line you are looking at does an explicit conversion from the type of the loop variable i to the port variable ib1. In Verilog, that explicit conversion is not needed, you can just assign the port variable directly. So, for example (in Verilog IEEE 1364-1995 compatible):
integer i;
...
for (i = 0; i < 16; i = i + 1) begin
ib1 = i; // <-- The line
#10; // -- Assume 1 step is 1 ns, can specific timescale if needed
end
If you want, you can even loop through the variable directly if its of type reg (ie, not a net):
for (ib1 = 0; ib1 < 15; ib1 = ib1 + 1) begin
#10;
end
#10;
[Note that as Greg mentioned, you need to be sure you dont create an infinite loop as if ib1 is 4-bits wide, it will always be less than 16, thus I fixed the example above to loop until ib1 is 15 (4'b1111)]
I'm trying to do a multiple check of some values but I can't get it to work.
if DerobModel.HouseProperties.IntValue['VolumeNorth'] = 1 then
ivol[2] := 1;
else
if DerobModel.HouseProperties.IntValue['VolumeEast'] = 1 then
ivol[2] := 1;
end
else
if DerobModel.HouseProperties.IntValue['VolumeWest'] = 1 then
ivol[2]:=1;
end;
I want to check if "VolumeNorth" is 1, and then the index ivol[2] is going to be 1, otherwise if East is 1 ivol[2] should be 1, and if this isn't there's a check for West and also so for South (This isn't in the code yet). If none of them are 1 then nothing should happen with ivol[2]. How do I get this to work?
Thanks!
Why don't use boolean or?
if (DerobModel.HouseProperties.IntValue['VolumeNorth'] = 1) or
(DerobModel.HouseProperties.IntValue['VolumeEast'] = 1) or
(DerobModel.HouseProperties.IntValue['VolumeWest'] = 1) or
(DerobModel.HouseProperties.IntValue['VolumeSouth'] = 1) then
ivol[2] := 1;
if any of volume (North, East, West, South) is 1 set ivol[2] to 1; if none of volumes are equal to 1 nothing is happen (pay attention, there's no else block)
Dmitry's answer is right for your scenario. I'm also an advocate of using BEGIN and END with all IF statements, for code clarity. It then helps you understand your program flow better.
if DerobModel.HouseProperties.IntValue['VolumeNorth'] = 1 then
begin
ivol[2] := 1;
end
else if DerobModel.HouseProperties.IntValue['VolumeEast'] = 1 then
begin
ivol[2] := 1;
end
else if DerobModel.HouseProperties.IntValue['VolumeWest'] = 1 then
begin
ivol[2]:=1;
end;
I'm working on a programming problem.
Note: This is not a student project. I am working on this for a new Quest for the website Try My Quest Dot Com, for which i am the admin.
Problem:
Jenny just started work as a programmer for Justine's Java Workshop. She is paid $10
an hour, with a few exceptions. She earns an extra $1.50 an hour for any part of a day where she works more than 8 hours, and an extra $2.50 an hour for hours beyond 40 in any one week. Also, she earns a 125% bonus for working on Saturday, and a 50% bonus for working on Sunday. The bonuses for Saturday and Sunday are computed based on the hours worked those days; they are not used to calculate any bonus for working more than 40 hours in a week. You'll be given the number of hours Jenny worked each day in a week (Sunday, Monday, etc ), and you need to compute her salary for the week. The input will be positive integers, less than or equal to 24. The output must be formatted with a dollar sign and rounded up to the nearest penny. For example, $2" and $2.136666" are wrong answers; the correct versions are $2.00" and $2.14", respectively.
Anyway, i am trying to write this in Delphi (No form project). I pass the program a command line argument - timecard.dat
input
0, 8, 8, 8, 8, 8, 0
0, 10, 10, 10, 10, 10, 0
0, 0, 8, 8, 8, 8, 8
0, 0, 0, 10, 10, 10, 10
10, 10, 10, 9, 9, 9, 9
Output
Output #1: $400.00
Output #2: $540.00
Output #3: $500.00
Output #4: $540.75
Output #5: $905.88
My Out put however is:
Output #1: $400.00
Output #2: $540.00
Output #3: $500.00
Output #4: $537.00
Output #5: $902.50
The last two output values of mine are different from the actual results. Not sure why, and the more i stare at the code, the less i see it
Can anyone tell me what i have done wrong?
program ACSL_Time_Cards;
{assumes Sunday = 1, Monday 3, etc}
uses
SysUtils,
Dialogs;
const
HourlyWage = 10.00;
OverEightWage = 1.50;
OverFortyWage = 2.50;
var
F: TextFile;
I, ArrayIndex: Integer;
WeeklyHours: Array[0..6] of Integer; //weekly hours
HourStr, LineStr: String;
TotalHours, TotalOverFortyHours, TotalOverEightHours, TotalSatHours, TotalSunHours: Integer;
TotalWages: Real;
begin
//initialize variables
TotalHours:= 0;
TotalOverEightHours:= 0;
TotalOverFortyHours:= 0;
TotalSatHours:= 0;
TotalSunHours:= 0;
TotalWages:= 0.00;
ArrayIndex:= 0;
//open file "timecard.dat" for input
if FileExists(ParamStr(1)) then
begin
AssignFile(F, ParamStr(1));
Reset(F);
//step through file and extract each line and store in hoursStr
while not EOF(F) do
begin
Readln(F, LineStr);
//step through hours string and fill Array with weekly hours
for I:= 1 to length(LineStr) do
begin
//if character is not a ',' then add it to hourStr
if LineStr[I] <> ',' then
HourStr:= HourStr + LineStr[I]
else
begin
//add HourStr to Array
WeeklyHours[ArrayIndex]:= StrToInt(HourStr);
//reset the variable
HourStr:= '';
//increment Variable
Inc(ArrayIndex);
end; //else
end; //for I:= 1 to length(HoursStr) do
//clean up by adding the last remaining one
WeeklyHours[ArrayIndex]:= StrToInt(HourStr);
//step through array and figure out overtime Daily and Weekly
for I:= Low(WeeklyHours) to High(WeeklyHours) do
begin
TotalHours:= TotalHours + WeeklyHours[I];
if WeeklyHours[I] > 8 then
TotalOverEightHours:= TotalOverEightHours + WeeklyHours[I]-8;
//get sunday hours
if I + 1 = 1 then
TotalSunHours:= TotalSunHours + WeeklyHours[I];
//get saturday hours
if I + 1 = 7 then
TotalSatHours:= TotalSatHours + WeeklyHours[I];
end;
//get total over 40 hours
if TotalHours > 40 then
TotalOverFortyHours:= TotalHours-40;
//compute Regular Hours
TotalWages:= TotalWages + TotalHours * 10.00;
//compute overtime hours
TotalWages:= TotalWages + TotalOverEightHours * 1.50;
TotalWages:= TotalWages + TotalOverFortyHours * 2.50;
//compute bonuses
TotalWages:= TotalWages + (TotalSatHours * 10.00) * 1.25;
TotalWages:= TotalWages + (TotalSunHours * 10.00) * 0.50;
ShowMessage('TotalWages: ' + FormatFloat('$0.00', TotalWages));
//reset variables
TotalWages:= 0.00;
TotalHours:= 0;
TotalOverEightHours:= 0;
TotalOverFortyHours:= 0;
TotalSatHours:= 0;
TotalSunHours:= 0;
HourStr:= '';
ArrayIndex:= 0;
end; //while not EOF(F) do
CloseFile(F);
end
else
ShowMessage('File does not exist!');
end.
I'm sure there are many ways that this could have been written better. I really am just interested in why my values different from the expected values. Thanks!
For a simple problem like this, you might want to write it out by hand and then see if your code follows the same steps you did.
For Output 4, the 125% bonus for Saturday is not including the $1.50 per hour extra after 8:
she should earn
Wed: $103 | $100 for 10 hours plus $3 for 2 hours over 8
Thu: $103 | $100 for 10 hours plus $3 for 2 hours over 8
Fri: $103 | $100 for 10 hours plus $3 for 2 hours over 8
Sat: $231.75 | ($100 for 10 hours, $3 for 2 hours over 8), $128.75 for 125% bonus
for a total of 540.75
The code would benefit from the I/O and the calculation being separated. You problems are with the calculation. I'd write it something like this:
uses
Math;
type
TDay = (
daySunday,
dayMonday,
dayTuesday,
dayWednesday,
dayThursday,
dayFriday,
daySaturday
);
TDayArray = array [TDay] of Integer;
function Wage(const Hours: TDayArray): Double;
const
BasicRate = 10.0;
DailyOvertimeRate = 1.5;
WeeklyOvertimeRate = 2.5;
DailyOvertimeThreshold = 8;
WeeklyOvertimeThreshold = 40;
DailyBonus: array [TDay] of Double = (1.5, 1.0, 1.0, 1.0, 1.0, 1.0, 2.25);
var
Day: TDay;
DailyOvertimeHours, WeeklyOvertimeHours, TotalHours: Double;
DailyPay: array [TDay] of Double;
begin
TotalHours := 0.0;
for Day := low(Day) to high(Day) do begin
TotalHours := TotalHours + Hours[Day];
DailyOvertimeHours := Max(Hours[Day]-DailyOvertimeThreshold, 0.0);
DailyPay[Day] := Hours[Day]*BasicRate;
DailyPay[Day] := DailyPay[Day] + DailyOvertimeHours*DailyOvertimeRate;
DailyPay[Day] := DailyPay[Day]*DailyBonus[Day];
end;
WeeklyOvertimeHours := Max(TotalHours-WeeklyOvertimeThreshold, 0.0);
Result := Sum(DailyPay) + WeeklyOvertimeHours*WeeklyOvertimeRate;
end;
This is still a little unpolished and I'm not very happy with the variable names for pay rates, overtime etc.
Once have such a utility function available, then putting it together with the rest of your program becomes a lot easier.
The biggest weakness in your current program is that everything is housed in one giant routine. Break it down into small pieces and you'll be able to verify those small pieces more readily than hunting for problems in a single large routine.
Find this by yourself by learning How to debug a Delphi program.
Pay atention to this parts:
Watches - you add a watch to track the values of program variables or expressions as you step over or trace into code.
Breakpoints - when pressing the F5 button or clicking on the left bar in your editor you can add a red line to your source. This line of source will have a breakpoint. When running the program, the execution will stop when it passes the source line. Now you can trace into your source by using some function keys.
I am struggling to get an Epson "ESC/POS" printer to print barcodes (Using Delphi) and want to test if the printer is not faulty. Do you know where I can find a program to print a barcode in "ESC/POS"? I suppose as a last resort an OPOS program will also be OK.
Also, a demo Delphi Program that works will also be fine. All the Delphi snippets I have so far is not working.
The printer I am using is an Epson TM-L60II
I Have a full tests program written in Delphi 5 for the TMT88's but the source is abit big for here so here is the barcode bits
Please note that as its snippets from the full object some vars/functions may be missing
To get the barcode chars
{**
* #param a ean13 barcode numeric value
* #return the escpos code for the barcode print
* Description uses escpos code, return code needed to print a ean13 barcode
*}
function TPrintEscPosToPort.getBarcodeEscPosCode(l_ean13:String):String;
var
l_return:String;
begin
l_return := CHR(29) + 'k' + CHR(67) + CHR(12);
l_return := l_return + l_ean13; // Print bar code
l_return := l_return + l_ean13; // Print bar code number under thge barcode
Result := l_return
end;
to print to a printer
{**
* #param Printer Name, Item be printed, Cut the papers after the cut, #no of copies to print
* #return boolen, true if it printed
* Description prints a test page to the tysso printer
*}
function TPrintEscPosToPort.escPosPrint(const l_printer, l_textToPrint :String;l_cutPaper:Boolean=true;l_copies:integer=1): Boolean;
var
l_pPort,l_pName,l_tmp:String;
i,x:integer;
PrinterFile: TextFile;
begin
// set result to false so any thing other then a good print will be false
Result:= FALSE;
try
//Find if the printer exists, else set to defult -1
i := Printer.Printers.IndexOf(l_printer);
if (i > -1) then
begin
Printer.PrinterIndex := i;
l_pName := Printer.Printers[i]; //Get the printer name (incase its the defult and not the one passed)
l_pPort := Self.getPrinterPort(l_pName) ; // get the port name from the reg
end;
// If true add headers and footers to the passed text
if (Self.aPrintHeadersFooters) then
begin
l_tmp := Self.getHeader()
+ l_textToPrint + Self.GetFooter();
end
else
begin
l_tmp := l_textToPrint;
end;
//Send the Document To the printer
try
for x:= 1 to l_copies do //Print multi-copies
Begin
//Assign the file to a tmp file in the printer port
if (length(trim(l_pPort)) > 0) then AssignFile(PrinterFile,l_pPort)
else
begin
//only use if we cant get the port
//(may look bad as ctrl codes are still in place)
AssignPrn(PrinterFile);
l_tmp := Self.stripEscPos(l_tmp);
end;
Rewrite(PrinterFile);
try
//Send the passed Text to the printer
WriteLn(PrinterFile,l_tmp);
if (Self.aPrinterReset) then
WriteLn(PrinterFile,escReset); // Reset the printer alignment
if (l_cutPaper) then
WriteLn(PrinterFile,escFeedAndCut); //Cut the paper if needed
finally
CloseFile(PrinterFile);
Result:= true;
end;
end;
except
end;
except
end;
end;
Update
Here is a lost of control code constants from the code above, hopefully the names are descriptive enough.
const
escNewLine = chr(10); // New line (LF line feed)
escUnerlineOn = chr(27) + chr(45) + chr(1); // Unerline On
escUnerlineOnx2 = chr(27) + chr(45) + chr(2); // Unerline On x 2
escUnerlineOff = chr(27) + chr(45) + chr(0); // Unerline Off
escBoldOn = chr(27) + chr(69) + chr(1); // Bold On
escBoldOff = chr(27) + chr(69) + chr(0); // Bold Off
escNegativeOn = chr(29) + chr(66) + chr(1); // White On Black On'
escNegativeOff = chr(29) + chr(66) + chr(0); // White On Black Off
esc8CpiOn = chr(29) + chr(33) + chr(16); // Font Size x2 On
esc8CpiOff = chr(29) + chr(33) + chr(0); // Font Size x2 Off
esc16Cpi = chr(27) + chr(77) + chr(48); // Font A - Normal Font
esc20Cpi = chr(27) + chr(77) + chr(49); // Font B - Small Font
escReset = chr(27) + chr(64); //chr(27) + chr(77) + chr(48); // Reset Printer
escFeedAndCut = chr(29) + chr(86) + chr(65); // Partial Cut and feed
escAlignLeft = chr(27) + chr(97) + chr(48); // Align Text to the Left
escAlignCenter = chr(27) + chr(97) + chr(49); // Align Text to the Center
escAlignRight = chr(27) + chr(97) + chr(50); // Align Text to the Right
Get the Microsoft POS For .Net 1.11, it's got an SDK that includes a sample application that performs all the basic operations on POS hardware. I'm using it all the time to test that cash drawers work ok for example.
There's also a source code included (in .Net), so you can see how they do it.
I am developing a timer in Delphi 2009. I am currently using the following to format my timer display:
Caption := Format('%.2d', [Hours]) + ':' +
Format('%.2d', [Minutes]) + ':' +
Format('%.2d', [Seconds]);
and this as expected displays the time as:
00:04:35
However, when I go into negative time it is understandably displaying it as:
00:-04:-35
I need the time to display as:
-00:04:35
Any Ideas?
Prefix:='';
if (Hours<0) or (Minutes<0) or (Seconds<0) then
Prefix:='-';
Caption := Prefix+Format('%.2d', [Abs(Hours)]) + ':' +
Format('%.2d', [Abs(Minutes)]) + ':' +
Format('%.2d', [Abs(Seconds)]);
Bye.
Well, you're formatting each number separately, therefore its no surprise you get negative sign on all of them. Try this:
Caption := Format('%.2d', [Abs(Hours)]) + ':' +
Format('%.2d', [Abs(Minutes)]) + ':' +
Format('%.2d', [Abs(Seconds)]);
if (Hours < 0) or (Minutes < 0) or (Seconds < 0) then begin
Caption := '-' + Caption;
end;