I had the bad idea of switching to Windows 7 (32 bit) and now my old Delphi 7 won't work properly. Actually it worked just fine until yesterday but (I suppose) after some MS Windows updates, it crashes if I double click a DPR file. However, it works if I run as administrator or if I start Delphi IDE without double clicking a DPR file (an...
I have to write a litle app that will process files saved in a given dir. I doesn´t pleases me the idea of writing infinite loops, timers and that kind of stuff. I´d like to know if there if (I would bet a finger that there is!) there is any windows API that would send my app a message for any file saved in that given dir. ...
I have a TList. It contains a collection of objects of the same type. These objects are descended from a TPersistent, and have about 50 different published properties. In my application, the user can issue a search of these objects, and the results of the search are displayed in a TDrawGrid, with the specific columns displayed being...
I followed the advice received in a previous discussion ( http://stackoverflow.com/questions/3666292/should-library-path-point-to-the-source-files-of-packages/3686542#3686542 ) and now my Library Path points to folders containing the compiled code (DCU) and NOT to the source code of my controls. The problem is that I have to duplicate th...
Hi, I have a system that recently do not run delphi program and shows runtime error 216. What's the problem and how can I fix it? Please help me. Thank you ...
i made a simple form designer in delphi, drag and drop a button on the form and it draws it, but the thing is i cant save/load this project since i dunno how to, is there anyway that i could be abel to save it to .rc file and load it from there? ...
My application written month ago in Delphi 7. Now I want to convert a float str value (like 12.5) to extended, but delphi raise an error. Debugger Exception Notification Project Educatee.exe raised exception class EConvertError with message ''12.5' is not a valid floating point value'. Process stopped. Use Step or Run to continue. Sam...
Just want to confirm with the COM/DCOM experts out there... I have a Delphi COM EXE that is running on a server (threading is Single Apartment) and another copy of that same EXE starts up on the same server (a server that has say 2 processors with dual core so the task manager shows 4 separate graphs) will they take turns waiting for e...
I have a TListBox on a form, and items are added with listbox1.ItemIndex := listbox1.Items.AddObject('msg', TObject(grp)); grp is an integer, The listbox is set to lbOwnerDrawFixed In the onDrawItem event i get the Exception EStringListError raise on the marked line msg := (control as Tlistbox).Items.Strings[index]; <-- this line ...
When I asked this question I accepted the answere because it made sense and the documentation pointed was right. Testing a machine with IE6 against other one with IE7 with the same compiled executable using TWebBrowser the behaviour was indeed as pointed in the answere. Now I put the answere in doubt again, in a machine with IE8 that s...
Hi I have the following problem. There's a pagecontrol on my form and I want to activate a certain tabsheet and then drag and drop (from explorer) to a scrollbox on the tabsheet. (each tabsheet has a scrollbox) I have code to activate a tab when you mousemove over the pagecontrol. (see code below) The problem is that when I drag a file...
Hi, What is the preferable way to write Delphi database applications using transactions and also data-aware components? I have to write a client app that access InnoDB tables, and do some master-detail kind of things inside transactions. After doing some research on transactions (from general point-of-view), then I humbly make a conclu...
I am using Delphi7 ClientDataSet to read and write xml files for some of my data. Howerver, when I want to browse this outside the program (double clicking the xml in Windows Explorer) I get the 'An invalid character was found in text content. Error processing resource' - even although the data reads and writes fine from within Delphi. ...
I wrote a program that uses OLE and it was working fine until I added some components which were important for my program, after that my program have problem when starts to work with OLE and raise this exception: "EOleSysError No more threads can be created in the system" is there any way to requesting more threads or free u...
i'm using TwwDbLookupComboDlg component in delphi 7. I want to change the date format in the combobox (as shown below) from '1/1/2009' to 'Jan 2009', any idea? ...
How can i set the printing size (width and height) by code without showing a dialog? Thanks ...
I need to know if all characters in a string are equal (formed by the same character). the function must return true or false depending if all the elements of the string are equal to an particular char. I wrote this function that works well, but I'm looking for a more optimal (fastest) solution, the strings can have thousands of chars...
hi, I'm using Delphi 7, and I want to create a custom warning message(which will be showed at compilation), so I can warn other programmers on some modifications. I've searched on the internet but i didn't found anything relevant. Other solutions, are welcomed as well, as long other programmers are warned about things I want, when the...
in Delphi 7 , useing TADOQuery. in the contructor i do ADOQuery.open; then when another function is called from outside the form, the ADOQuery is closed why? constructor TClass1.Create(AOwner: TComponent; MyParam: TProgramParam); begin inherited; ADOQuery.Open; ADOQuery.Locate('fieldName',Param); end; ...
hi ! I will start on a private project that will require some GPS software on my computer, so far I have been contacting Garmin and Destinator to ask if they have some sort of SDK kit for theire map services. however they could not offer me this in Norway. I am therefore asking here if anyone here know any kind of map software, capable...