I was browsing the Delphi 2009 language guide. And found something strange. In the list of directives (not compiler directives) I found pointermath. RAD-Studio Reference Delphi Reference Delphi Language Guide Fundamental Syntactic Elements Fundamental Syntactic Elements [Directives] I know it...
I am improving a small alarm/reminder application that I build years ago, and I would like to do an hourly beep, but instead of beeping it would be much nicer it would tell time. Is there any simple way to do this in DELPHI D2007 or later? Thanks ...
I'm having an issue with Delphi 2007 when trying to consume a web service I've set up in Java using JAX-WS. The web service can be consumed fine from another Java program and from a C# / ASP.NET 2.0 website. However, when I try to access the same service using the WSDL Importer in Delphi 2007 (17-DEc-2007 patch), the JAX-WS web service d...
Hello there, I don't know why, but a SOAP Server application and a pair of clients of this services stop compiling without any know causes for me. I have installed delphi 2007 and delphi 2009 and I don't know if the cause can come from this. Now when I compile a soap application I get an error like: 'Unit XMLSchema was compiled with a ...
I need to switch every control of a particular type on a form to a different type while maintaining the name and the code associated with each control. For example, let's say I need to switch a dozen or more TEdit fields to TSpinEdits. How can I do that in Delphi 2007 with minimal effort? ...
This has always bugged me to what is the best way to do the following... with a simple one to many db, when you have 2 tables/grids on a form and the 2nd one filtered by the first. where is the best place to put the filter code ie: procedure TForm1.tblCustormersAfterScroll(DataSet: TDataSet); begin if tblCustormersCustormerID.AsS...
I've got an application where there's a main background form, from there user can only non-modal forms that maintains different part of the system. The non-modal forms overrides the CreateParams method so each one displays a button in the start task bar: procedure TfmMaterialsPlanning.CreateParams(var Params: TCreateParams); begin in...
I have just started using an exception logger (EurekaLog) in my (Delphi) application. Now my application sends me lots of error messages via e-mail every day. Here's what I found out so far lots of duplicate errors multiple mails from the same PC While this is highly valuable input to improve my application, I am slightly overwhelmed...
On a form, I have a Quantum Grid and some db-aware editcomponents. When appending a new record in the grid, typing some editvalues both in the grid and the separate editcompoennts, I get an error: EOleException: Row cannot be located for updating. Some values may have been chenged since it was last read After some googling, I thin...
I have a method which constructs an object, calls an Execute method, and frees the object. The type of object is determined by a TClass descendant passed into the method. Note this is Delphi for Win32 I am talking about, not .NET. Edit: I should point out that this is Delphi 2006, as it has been noted in answers below that in future ver...
I have a small application I am working on that is almost finished thanks to those who have assisted me here. I have one last task however. I need to be able to Filter a TClientDataSet on a NestedDataSet field. ClientDataset1 Field0: Name (Lake Name) ClientDataset2 Field0: Species (Fish Species) type TDataModule1 = class( TDataModu...
As I'm working to add custom printing to my application, I've settled on using TMetafile to create the pages, then using it to preview &/or print, but I'm finding the documentation lacking. Are there any good resources for learning the ins and outs of working with TMetafile and TMetafileCanvas? ...
Problem: I need to write a function that takes 4 bytes as input, performs a reversible linear transformation on this, and returns it as 4 bytes. But wait, there is more: it also has to be distributive, so changing one byte on the input should affect all 4 output bytes. The issues: if I use multiplication it won't be reversible after ...
I remember using a program, some years back, that allowed me to fine-tune my monitor's settings with custom gamma ramps and other adjustments. It had the ability to create different screen-settings profiles for different uses, and setup global hotkey shortcuts to activate them without switching out of the program you're in. My question...
I've been meaning to ask this question for a while, at least 4 times a day I need to restart Delphi to get the debugger to stop at breakpoints again. Sometimes I can trick it into working again by attaching to the process after a rebuild of the code. But most of the time I can't and it is costing me a lot of time to go back and re-open...
What is the best way to avoid that an application is copied and used without the owner’s knowing? Is there any way to trace the usage? Meaning periodically the application communicates back, with enough information so that we can know where it is, and if it’s legal. Next thing, of course, shut it down, if it’s not legit. ...
I'm writing my Delphi TGraphicControl paint procedure. I create a canvas and I stretchdraw it onto the graphic area. It works well. Then I repeat this with another Stretchdraw onto the graphic area but it is drawn in the area of the first Stretchdraw and not onto the graphic area as I direct it. Is there a way that can place both stre...
Hi, I've been searching Google (and stack overflow of course!) for a way to sort a list of integers by value, but also by an extra factor. I'm looking for some sort of algorithm to implement I suppose. So far, I have an array in Delphi 2007 that sorts the values from largest to smallest, but now I would like it to sort values that are...
I am writing a unit test infrastructure for a large Delphi code base. I would like to link calls to pure functions in SysUtils.FileExists for example to a "MockSysUtils.FileExists" instead. Creating a SysUtils unit with the same interface is not appreciated by the compiler. What I am thinking of is to hook in my mock function at runtim...
I have the service name for a windows service in delphi, and I know how to get the handle from that as well. What I need to do is stop a service, and if the stop fails for some reason I need to kill the process associated with the service. The problem is that I have multiple services running from the same executable, so I can't use the...