Recent questions tagged Delphi

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delphi - TListView and mouse wheel scrolling

I have a TListView component in a form. It's quite long and I want user to able scroll it, if mouse is over ... can I do that? Regards, evilone See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Creating forms without using VCL

I need to create a form (using CreateWindow functions) without any help from the VCL (or any visual control) ... download a sample besides MSDN? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I render a square bitmap to an arbitrary four-sided polygon using GDI?

I need to paint a square image, mapped or transformed to an unknown-at-compile-time four-sided polygon. ... only algorithmic information too. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Method pointer and regular procedure incompatible

I have an app, which has multiple forms. All these forms have a PopupMenu. I build the menu items ... get around this? Thanks GS See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to open an URL with the default browser with FireMonkey cross-platform applications?

Usually, I use: ShellExecute(0, 'OPEN', PChar(edtURL.Text), '', '', SW_SHOWNORMAL); How can I have the ... on all platforms (Windows and OSX)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Is the compiler treatment of implicit interface variables documented?

I asked a similar question about implicit interface variables not so long ago. The source of this question was ... of the interface variable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I set a hot key ("win+Key") combination to call an application?

I need to set a hot key at the operating system level, that once set will call whatever I tell it to call. ... open so that the hot key works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Storing UTF-8 string in a UnicodeString

In Delphi 2007 you can store a UTF-8 string in a WideString and then pass that onto a Win32 function, e.g. ... (PWideChar(UTF8Str), ...) end; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Start program on a second monitor?

Is there a way to specify which monitor a application appears on in Delphi or C++Builder? I am developing a ... second monitor after it starts. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I write to the console window for debugging?

Can I display the result of a loop in the console window in a VCL application for debugging purposes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Secure way to store password in Windows

I'm trying to protect a local database that contains sensitive info (similar to this question, only for delphi ... this DPAPI in Delphi? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Recompiling the RTL - if possible, then how?

I have this craving to do some experiments with modifying the underbelly of the Delphi run time library (RTL), ... google won't confirm it.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why 2 GB memory limit when running in 64 bit Windows?

I'm a member in a team that develop a Delphi application. The memory requirements are huge. 500 MB is normal but in ... running in a 64 bit OS ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Component (similar to trackbar) to enter a range of values

I need a component for entering ranges. I was thinking along the lines of a trackbar with two markers. Are ... that can simulate it easily? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Adding manifest for admin rights request

I have an application that writes program settings to the windows registry that is absolutely necessary so.storing to ... add my own manifest? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - in Delphi7, How can I retrieve hard disk unique serial number?

Hi I want to retrieve HDD unique (hardware) serial number. I use some functions but in Windows Seven or ... it without run as Administrator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - What's the difference between Refresh, Update and Repaint?

I don't know which of those three methods suits me most. They all work for me. Does anyone know the ... between Refresh, Update and Repaint? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - What's the difference between "var" and "out" parameters?

What's the difference between parameters declared with var and those declared with out? How does the compiler treat ... have on the matter? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can a function with 'varargs' retrieve the contents of the stack?

Normally, in Delphi one would declare a function with a variable number of arguments using the 'array of const ... on sourceforge for details). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why is it bad practice to call an eventhandler from code?

Say you have a menu item and a button that do the same task. Why is it bad practice to put the code for ... by both the menu and the button See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Getting Allen Bauer's TMulticastEvent<T> working

I've been mucking around with Allen Bauer's code for a generic multicast event dispatcher (see his blog posts ... returns, an AV is raised. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - What is the difference between of object and reference to?

What is the difference between TFuncOfIntToString = reference to function(x: Integer): string; and TFuncOfIntToString = ... use the of object See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Determine when running in a virtual machine

Is there an official way for an application to determine if it is running in VMWare or Virtual PC (or whatever ... am sure I can convert it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - I want to read Mouse selected text from foreground window without using clipboard

Is there any windows application process interface to read selected/highlighted text from foreground window . See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why does the compiler say "Undeclared identifier" for my form's fields?

This code gives me an error message: [Error] Unit1.pas(52): Undeclared identifier: 'Edit1'. procedure SetTCPIPDNSAddresses( ... how do I fix it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How do I make SetThreadDesktop API work from a console application?

I saw Stack Overflow question How to switch a process between default desktop and Winlogon desktop?. And I have ... .Message); end; end. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Control's OnExit eats up mouseup event for new control when showing another window

I found this question on Experts-Exchange. Control's OnExit eats up mouseup event for new control when showing ... clicked. Is that possible? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to store images in FireMonkey?

In VCL I had ImageList to store images. In FireMonkey there is no ImageList control. How do I store images in FireMonkey for later use? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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