I solved my problem, but I need to know why this problem occurs?
I wrote a project to load the file into the listBox and then delete the strings one by one,
But when I delete the listBo
Tag: time
Delphi – How does my form detect the keydown event when another control is focused?
procedure TMainForm.KeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
if (GetKeyState(Ord(‘Q ‘)) The above event only works when the focus is set to the main form.
If I run the ap
Delphi – Automatic shutdown when not in use within a period of time
See the answer in English> How do I check for PROGRAM idle time, as opposed to SYSTEM idle time? Three
We have a program that we are writing in Delphi XE. I have A question:
If the program is
Delphi – How to update TLIST when it is an iteration using the for-in loop?
I am trying to learn generics in Delphi, but TList has a very basic problem.
I have successfully created a list of integers and used 1000 Fill it with an odd number. I want to change every nu
Does the LuA pathological model have an index running time?
As we all know, regular expressions implemented in a recursive manner (rather than NFA/DFA) may require exponential running time in some cases. Lua patterns are implemented through recursive matche
How to get the current date and time of MySQL?
Is there a value or command like DATETIME that I can use in manual queries to insert the current date and time?
INSERT INTO servers (
server_name, online_status, exchange, disk_space, networ
C # Read and write files When the file is used by another process, so the process cannot access the file.
Now you need to read the log file and display it in the log query, and you need to use the IO stream.
1,
FileStream fs = File.OpenRead(url);
StreamReader sr = new StreamReader((System.
MySQL needs attention when establishing index optimization
1, create an index
is dominant for queries For applications, the index is particularly important. In many cases, the performance problem is simply because we forgot to add an index, or because w
C # Epplus export, set cell format, set column header style, set cell grid box, formatted date
//Data source DataTable
DataTable dataTable = new DataTable();
//…
//…
ExcelPackage package = new ExcelPackage();
//Create Sheet
ExcelWorksheet workSheet = package.Workbook.Worksheets
An error occurred while retrieving the parent of the project: I can’t find the resource that matches the given name ‘Android: Textappearance.Material.Widget.Button.Borderless.Colored’
When I started a new project in android studio, I received these errors.
Error: (1) Error retrieving parent for item: No resource found that matches the given name’android:TextAppearance.Mate