On Tuesday, 11 June 2024 at 13:35:19 UTC, matheus wrote:
On Tuesday, 11 June 2024 at 13:00:50 UTC, Vinod K Chandran
wrote:
...
Similar posts that may help:
https://forum.dlang.org/thread/hryadrwplyezihwag...@forum.dlang.org
https://forum.dlang.org/thread/dblfikgnzqfmmglwd...@forum.dlang.org
On Tuesday, 11 June 2024 at 14:59:24 UTC, Kagamin wrote:
1) arena allocator makes memory manageable with occasional
cache invalidation problem
2) no hashtable no problem
3) error handling depends on your code complexity, but even in
complex C# code I found exceptions as boolean: you either have
On Tuesday, 11 June 2024 at 16:54:44 UTC, Steven Schveighoffer
wrote:
I would instead ask the reason for wanting to write D code
without the GC.
-Steve
Hi Steve,
Two reasons.
1. I am writting a dll to use in Python. So I am assuming that
manual memory management is better for this project
On Wednesday, 12 June 2024 at 01:35:26 UTC, monkyyy wrote:
rather then worring about the gc, just have 95% of data on the
stack
How's that even possible ? AFAIK, we need heap allocated memory
in order to make GUI lib as a DLL. So creating things in heap and
modify it, that's the nature of m
On Wednesday, 12 June 2024 at 09:44:05 UTC, DrDread wrote:
also just slap @nogc on your main function to avoid accidential
allocations.
Thanks for the suggestion. Let me check that idea.
On Wednesday, 12 June 2024 at 10:16:26 UTC, Sergey wrote:
Btw are you going to use PyD or doing everything manually from
scratch?
Does PyD active now ? I didn't tested it. My approach is using
"ctypes" library with my dll. Ctypes is the fastes FFI in my
experience. I tested Cython, Pybind11
On Wednesday, 12 June 2024 at 15:21:22 UTC, bachmeier wrote:
You're splitting things into GC-allocated memory and manually
managed memory. There's also SafeRefCounted, which handles the
malloc and free for you.
Thanks, I have read about the possibilities of "using malloc and
free from D" in
On Wednesday, 12 June 2024 at 15:33:39 UTC, bachmeier wrote:
A SafeRefCounted example with main marked @nogc:
Thanks for the sample. It looks tempting! Let me check that.
On Wednesday, 12 June 2024 at 15:33:39 UTC, bachmeier wrote:
A SafeRefCounted example with main marked @nogc:
```
import std;
import core.stdc.stdlib;
struct Foo {
double[] data;
double * ptr;
alias data this;
@nogc this(int n) {
ptr = cast(double*) malloc(n*double.sizeof);
dat
On Wednesday, 12 June 2024 at 18:58:49 UTC, evilrat wrote:
the only problem is that it seems to leak a lot PydObjects so i
have to manually free them, even scope doesn't helps with that
which is sad.
Oh I see. I did some experiments with nimpy and pybind11. Both
experiments were resulted in
On Wednesday, 12 June 2024 at 18:57:41 UTC, bachmeier wrote:
Try `foo[10] = 1.5` and `foo.ptr[10] = 1.5`. The first
correctly throws an out of bounds error. The second gives
`Segmentation fault (core dumped)`.
We can use it like this, i think.
```
struct Foo {
double * ptr;
uint capacity
On Saturday, 17 August 2024 at 17:31:53 UTC, Steven Schveighoffer
wrote:
Go to dlang.org, select dicumentation, then library reference.
Pick any module, click on it
In the upper right, switch the docs from stable to ddox
Now you can use the search bar and it is interactive. Typing in
indexOf
On Saturday, 17 August 2024 at 19:54:07 UTC, Richard (Rikki)
Andrew Cattermole wrote:
https://dlang.org/phobos/core_thread_osthread.html#.Thread.sleep
Worth noting is that sleeping is not equivalent to performing
work. It's the exact opposite, the lack of work.
Thanks Rikki. Actually, I wa
On Sunday, 18 August 2024 at 08:39:49 UTC, IchorDev wrote:
As Rikki points out, delay or sleep functions (as the name
says) ‘put the thread to sleep’. If you want the thread to be
constantly busy, you can use a while loop:
```d
import core.time;
//waste electricity for 1ms:
const endTime = M
On Monday, 4 April 2022 at 13:32:19 UTC, Steven Schveighoffer
wrote:
This looks more like lisp or scheme. You know this is a forum
for the D programming language?
This was the same question in my mind.
Hi all,
Please take a look at this code. Is this the right way to use
private constructors ?
```d
class Foo {
int p1 ;
string p2 ;
bool p3 ;
private this(int a, string b, bool c) {
this.p1 = a
this.p2 = b
this.p3 = c
}
this(int a) {
this(
On Monday, 25 April 2022 at 02:22:42 UTC, Ali Çehreli wrote:
Looks good to me.
There are other ways as well:
Thanks a lot. All I wanted to implement more than ctor with
different parameters and avoid code duplication.
On Monday, 25 April 2022 at 07:19:31 UTC, bauss wrote:
Yes and in addition to Ali's message then remember it's
private for the module only.
Oops typo.
What I meant is that private is module level, so it's __not__
private in the module, but it is for other modules.
Thanks for the reply.
Hi all,
I have dynamic array and I want to remove an element from it. All
I have the index of the element to remove. And I want to the
array should be in the same order. How to do it ?
On Monday, 2 May 2022 at 20:50:17 UTC, H. S. Teoh wrote:
should be in the same order. How to do it ?
int[] data = [ 10, 20, 30, 40, 50 ];
data = data.remove(2);
assert(data == [ 10, 20, 40, 50 ]);
T
Thanks a lot.
Hi all.
I want to convert an LPCWSTR to string.
I have a struct like this
```cpp
typedef struct tagNMDATETIMESTRINGW {
NMHDR nmhdr;
LPCWSTRpszUserString;
SYSTEMTIME st;
DWORD dwFlags;
} NMDATETIMESTRINGW, *LPNMDATETIMESTRINGW;
```
I want to convert this `pszUserString` to a s
On Tuesday, 10 May 2022 at 01:07:37 UTC, Mike Parker wrote:
```d
import std.conv : to;
string s = to!string(pszUserString);
```
Thanks, it worked. At first, I tried `to!string` but it failed
because of this usage--
```d
this(LPCWSTR dtpStr) { this.dateString =
to!string(LPCWSTR)(dtpStr) ; }
Hi all,
I want to call the Bitmap function from gdi+. This is the syntax
of the function in C++.
```c++
void Bitmap(
[in] const WCHAR *filename,
[in] BOOLuseEmbeddedColorManagement
);
```
And this is the mangled name which I got from goldbolt compiler.
`?Bitmap@@YAXPEB_WH@Z `
Now, t
On Sunday, 5 June 2022 at 10:57:16 UTC, rikki cattermole wrote:
Bitmap is a class, not a namespace.
The function you want is actually a constructor.
https://github.com/Alexpux/mingw-w64/blob/master/mingw-w64-headers/include/gdiplus/gdiplusheaders.h#L179
Thank you for the reply. Well, I know t
On Sunday, 5 June 2022 at 11:33:14 UTC, Vinod K Chandran wrote:
For future readers of this thread, rikki cattermole helped me to
findthe solution to this problem. I Do not need the C++ classes
or their methods for this. There is a set of C functions in
gdiplus.dll. Check this link.
https:/
On Saturday, 18 June 2022 at 21:03:23 UTC, solidstate1991 wrote:
It seems that you are created a layered window. So chances are
there to it become translucent.
On Friday, 1 July 2022 at 20:08:45 UTC, ryuukk_ wrote:
I think it is `extern(D) void testFunc();`?
Thanks for the reply. But the result is same linker error.
On Friday, 1 July 2022 at 21:02:20 UTC, mw wrote:
I think the problem is the linker looking for dime.testFunc,
while your lib function is dimedll.testFunc
Thanks for the reply. What about this `mixin SimpleDllMain;` I
suspect this.
On Friday, 1 July 2022 at 22:22:42 UTC, mw wrote:
Try follow instructions here:
https://wiki.dlang.org/Win32_DLLs_in_D
Thanks. So using a `def` file is a must I think. At first, I
thought I can skip that.
On Friday, 1 July 2022 at 22:38:17 UTC, Adam D Ruppe wrote:
On Friday, 1 July 2022 at 22:32:24 UTC, Vinod K Chandran wrote:
So using a `def` file is a must I think.
no it is not. you just need to mark things export and make sure
names match (including module name)
Thanks for the reply. Thes
On Saturday, 2 July 2022 at 01:05:25 UTC, Ali Çehreli wrote:
3) The users of this dll should import that .di file (declaring
the functions themselves won't work):
Ali
Hi, Thanks for the reply. I have tried your suggestion. First, I
compiled my dll's source code with `-H` switch as you sai
On Saturday, 2 July 2022 at 21:36:50 UTC, mw wrote:
Actually, can you create a github repo, I'm sure people will
send you a working PR.
Yes I can. I will inform here once I did it.
Hi all,
I am trying to create a program which burns time codes to a
video. I am using ffmpeg for this. So far, I can successfully
start ffmpeg in another thread and stop it when I need. But I
can't read the live outputs from ffmpeg. This is my code.
```d
void onBtnBurnClick(Control c, EventArg
On Friday, 23 June 2023 at 23:37:29 UTC, Vinod K Chandran wrote:
Hi all,
Hi, I found the solution by myself. We can use Pipe struct for
this job.
Here is the code looks like. This is for future readers.
```d
void onBtnBurnClick(Control c, EventArgs e) { // A button click
event handler
Hi all,
I am new to D. But some fair experience with vb.net. I was
playing with D classes. I wrote a class in a D file.
The file name is "classFile.d"
```D
class TestClass {
int myIntVar;
string myStringVar ;
this(int miv, string msv) {
this.myIntVar = miv ;
On Tuesday, 22 October 2019 at 17:40:11 UTC, Arun Chandrasekaran
wrote:
On Tuesday, 22 October 2019 at 17:34:51 UTC, Vinod K Chandran
wrote:
Hi all,
I am new to D. But some fair experience with vb.net. I was
playing with D classes. I wrote a class in a D file.
The file name is "classFile.d"
`
On Tuesday, 22 October 2019 at 17:38:58 UTC, Adam D. Ruppe wrote:
On Tuesday, 22 October 2019 at 17:34:51 UTC, Vinod K Chandran
wrote:
Hi all,
I am new to D. But some fair experience with vb.net. I was
playing with D classes. I wrote a class in a D file.
The file name is "classFile.d"
did y
On Tuesday, 22 October 2019 at 18:33:32 UTC, Ali Çehreli wrote:
On 10/22/2019 11:25 AM, Vinod K Chandran wrote:
> On Tuesday, 22 October 2019 at 17:38:58 UTC, Adam D. Ruppe
wrote:
>> [...]
Chandran wrote:
>>> [...]
playing
>> [...]
command line?
That: The -i switch is the answer to your question
On Tuesday, 22 October 2019 at 18:31:17 UTC, Adam D. Ruppe wrote:
On Tuesday, 22 October 2019 at 18:21:36 UTC, Vinod K Chandran
wrote:
But what if there is too many include files ?
The dmd -i thing will do that for you
dmd -i main.d
and it will automatically find the others, assuming they ar
On Tuesday, 22 October 2019 at 18:34:52 UTC, Daniel Kozak wrote:
On Tue, Oct 22, 2019 at 8:30 PM Vinod K Chandran via
Digitalmars-d-learn wrote:
On Tuesday, 22 October 2019 at 17:38:58 UTC, Adam D. Ruppe
wrote:
> On Tuesday, 22 October 2019 at 17:34:51 UTC, Vinod K
> Chandran
On Thursday, 24 October 2019 at 10:19:23 UTC, Vinod K Chandran
wrote:
On Tuesday, 22 October 2019 at 18:34:52 UTC, Daniel Kozak wrote:
On Tue, Oct 22, 2019 at 8:30 PM Vinod K Chandran via
Digitalmars-d-learn wrote:
On Tuesday, 22 October 2019 at 17:38:58 UTC, Adam D. Ruppe
wrote
Hi all,
I just found that DFL gui library very interesting. But after
some searching, i can see that DFL is inactive and there is few
other forks for it. So this is my question - Which fork is good
for a gui development in windows platform.
BTW, i just tested the gtkD and successfully compiled
On Sunday, 3 November 2019 at 14:01:03 UTC, Jesse Phillips wrote:
On Saturday, 2 November 2019 at 20:01:27 UTC, Vinod K Chandran
wrote:
Hi all,
I just found that DFL gui library very interesting. But after
some searching, i can see that DFL is inactive and there is
few other forks for it. So t
On Sunday, 3 November 2019 at 07:07:42 UTC, Mike Parker wrote:
On Sunday, 3 November 2019 at 07:06:12 UTC, Mike Parker wrote:
Here's an example, winhello.d, that should work with all of
the following command lines:
Sorry, here's the example:
== winhello.d
/+ dub.sdl:
name "entry"
dflags
Hi all,
I can do this in C++.
#include
using namespace std ;
#define end };
#define log(x) cout << x << endl
#define wait std::cin.get()
int main() {
log("Trying to avoid the visual clutter aused by closing
curly braces") ;
string myStr = "Now, code looks more elegant" ;
log(myS
On Sunday, 3 November 2019 at 16:55:36 UTC, Vinod K Chandran
wrote:
Hi all,
I can do this in C++.
#include
using namespace std ;
#define end };
#define log(x) cout << x << endl
#define wait std::cin.get()
int main() {
log("Trying to avoid the visual clutter aused by closing
curly braces
On Sunday, 3 November 2019 at 23:25:40 UTC, Jesse Phillips wrote:
On Sunday, 3 November 2019 at 16:48:52 UTC, Vinod K Chandran
wrote:
On Sunday, 3 November 2019 at 14:01:03 UTC, Jesse Phillips
https://github.com/Rayerd/dfl
@Jesse Phillips,
Thank you for the reply. Does DWT is built upon Ja
On Monday, 4 November 2019 at 19:29:22 UTC, Jacob Carlborg wrote:
On 2019-11-03 17:48, Vinod K Chandran wrote:
[...]
Yes. It's a full translation of the Java code to D. No JNI, JVM
or Java or remains.
[...]
I don't know if that's the case. Also I don't know if that's
related to Java/JV
Hi all,
I am just playing with some win api code in D. Well, so far so
good. I've create a simple program which shows a message box. I
know i can avoid the cmd window with "dmd -L/SUBSYSTEM:windows".
But this https://wiki.dlang.org/D_for_Win32 says that a "*.def"
file with these two lines
"EX
On Monday, 4 November 2019 at 00:20:37 UTC, Ali Çehreli wrote:
On 11/03/2019 08:55 AM, Vinod K Chandran wrote:
> [...]
There is nothing that stops one from using the C++ preprocessor
on any text file. For example, you can do the following
wherever GCC exists. If there are the following lines i
On Sunday, 10 November 2019 at 00:00:55 UTC, Adam D. Ruppe wrote:
On Saturday, 9 November 2019 at 23:59:20 UTC, Vinod K Chandran
wrote:
I 'named the the def file "simple.def", since my programs name
is also "simple". But no luck. Any help ?
you need to pass the .def file on the dmd command li
Hi all,
I am practicing D by writting a win API gui wrapper. I want to
use a single module import to use this Gui lib. Say i have 10
modules like--
"App.d, Form.d, Button.d, Label.d, TextBox.d, ComboBox.d,
ListBox.d, CheckBox.d, Panel.d, DateTimePicker.d"
In Nim, i can import and export all the
Hi all,
I am practicing some win32 api coding in D. So far so good. But
when i tried to import some d files from another folder, i wonder
how do this. This is my folder structure.
--> Source Folder
--> app.d //This is my main file. I am importing guiLib
in this main file.
-->
On Wednesday, 13 May 2020 at 22:10:02 UTC, Vinod K Chandran wrote:
Hi all,
I am practicing some win32 api coding in D. So far so good. But
when i tried to import some d files from another folder, i
wonder how do this. This is my folder structure.
--> Source Folder
--> app.d //This is
Hi all,
I wrote a class and in VS Code, DScanner says that the class is
undocumented. How can i document a class ?
On Thursday, 14 May 2020 at 06:05:00 UTC, Vinod K Chandran wrote:
Hi all,
I wrote a class and in VS Code, DScanner says that the class is
undocumented. How can i document a class ?
Never mind, i found the answer myself. Just like in dot net, i
added triple forward slash comment and problem so
On Thursday, 14 May 2020 at 11:25:48 UTC, Cogitri wrote:
On Thursday, 14 May 2020 at 06:08:17 UTC, Vinod K Chandran
wrote:
[...]
Also see https://dlang.org/spec/ddoc.html for more info on DDoc.
FWIW you can also disable the warning by adding the following
to VSCode's settings.json:
"dscann
On Thursday, 14 May 2020 at 08:02:28 UTC, Dennis wrote:
On Thursday, 14 May 2020 at 06:08:17 UTC, Vinod K Chandran
wrote:
On Thursday, 14 May 2020 at 06:05:00 UTC, Vinod K Chandran
wrote:
Hi all,
I wrote a class and in VS Code, DScanner says that the class
is undocumented. How can i document a
Hi all,
I just build a skeleton of a Gui library(win32 based) for my own
purpose. How do i use this in my d programs with dub ? Now, all
files are located in a folder called "GuiLib".
Side note : Why i started making a gui library instead of
learning language ?
Answer : By this way, i can learn
Hi,
For some unknown reasons, dub is not working for me. But i can
build my program with "dmd -i". But i would like to know if there
is any code to run my program with "dmd -i".
Note : "rdmd" is also working but it creates the exe file in temp
directory, so my AV is catching it every time. Its
On Thursday, 14 May 2020 at 12:57:19 UTC, JN wrote:
On Thursday, 14 May 2020 at 12:53:43 UTC, Vinod K Chandran
wrote:
Hi all,
I just build a skeleton of a Gui library(win32 based) for my
own purpose. How do i use this in my d programs with dub ?
Now, all files are located in a folder called "G
On Friday, 15 May 2020 at 18:22:47 UTC, Seb wrote:
On Friday, 15 May 2020 at 14:09:00 UTC, Vinod K Chandran wrote:
Hi,
For some unknown reasons, dub is not working for me. But i can
build my program with "dmd -i". But i would like to know if
there is any code to run my program with "dmd -i".
N
On Friday, 15 May 2020 at 14:29:38 UTC, Adam D. Ruppe wrote:
use the -run switch to dmd. Make sure it and te d file name are
the LAST arguments.
dmd -i other_dmd_args_you_need -run yourfile.d
Thank you for the reply. Let me try. :)
Hi all,
I am trying to create a win32 based gui in dlang. So far so good.
I can create and display my window on screen. But for handling
messages, i planned to write something like message crackers in
c++. But since, my WndProc function is a "nothrow" function, i
cannot use any function withou
On Sunday, 17 May 2020 at 09:50:00 UTC, Olivier Pisano wrote:
On Sunday, 17 May 2020 at 09:27:40 UTC, Vinod K Chandran wrote:
Hi all,
I am trying to create a win32 based gui in dlang. So far so
good. I can create and display my window on screen. But for
handling messages, i planned to write so
On Sunday, 17 May 2020 at 14:21:41 UTC, Vinod K Chandran wrote:
On Sunday, 17 May 2020 at 09:50:00 UTC, Olivier Pisano wrote:
On Sunday, 17 May 2020 at 09:27:40 UTC, Vinod K Chandran wrote:
Hi all,
I am trying to create a win32 based gui in dlang. So far so
good. I can create and display my wi
On Sunday, 17 May 2020 at 19:37:05 UTC, drug wrote:
17.05.2020 17:35, Vinod K Chandran пишет:
It worked. Thanks :) I have one more question. Which is
better, to include all the switch cases inside a single try
catch or write separate try catch for each switch cases ?
all the switch cases in
On Thursday, 14 May 2020 at 08:02:28 UTC, Dennis wrote:
On Thursday, 14 May 2020 at 06:08:17 UTC, Vinod K Chandran
wrote:
On Thursday, 14 May 2020 at 06:05:00 UTC, Vinod K Chandran
wrote:
Hi all,
I wrote a class and in VS Code, DScanner says that the class
is undocumented. How can i document a
Hi all,
Is it possible to write some class members in another module ? I
have class with a lot of member variables.(probably 50+) I would
like to write them (Not all, but some of them) in a special
module for the sake of maintenance.
On Tuesday, 19 May 2020 at 22:10:25 UTC, Adam D. Ruppe wrote:
On Tuesday, 19 May 2020 at 22:01:03 UTC, Vinod K Chandran wrote:
Is it possible to write some class members in another module ?
You can make some of members be other structs that you
aggregate together.
That's a good idea but the
On Tuesday, 19 May 2020 at 23:51:45 UTC, Boris Carvajal wrote:
On Tuesday, 19 May 2020 at 22:01:03 UTC, Vinod K Chandran wrote:
Hi all,
Is it possible to write some class members in another module ?
I have class with a lot of member variables.(probably 50+) I
would like to write them (Not all,
On Wednesday, 20 May 2020 at 15:01:36 UTC, welkam wrote:
On Wednesday, 20 May 2020 at 09:45:48 UTC, Vinod K Chandran
wrote:
// Now, we need to use like this
auto form= new Window();
form.event.click = bla_bla;
// I really want to use like this
auto form= new Window();
form.click = bla_bla;
```
Hi all,
I have some questions about this forum.
1. How to edit a post ?
2. How to edit a reply ?
3. How to add some code(mostly D code) in posts & replies.
4. How to add an image in posts & replies.
5. Is there a feature to mark my post as "[SOLVED]" ?
On Wednesday, 20 May 2020 at 21:06:35 UTC, welkam wrote:
On Wednesday, 20 May 2020 at 20:49:52 UTC, Vinod K Chandran
wrote:
Hi all,
I have some questions about this forum.
1. How to edit a post ?
2. How to edit a reply ?
3. How to add some code(mostly D code) in posts & replies.
4. How to add an
On Wednesday, 20 May 2020 at 21:13:25 UTC, Paul Backus wrote:
On Wednesday, 20 May 2020 at 20:49:52 UTC, Vinod K Chandran
wrote:
[...]
You can't. If you need to make a correction, the best you can
do is to make a follow-up post.
[...]
Copy & paste it.
[...]
You can't embed images dir
On Wednesday, 20 May 2020 at 21:15:25 UTC, Dukc wrote:
On Wednesday, 20 May 2020 at 20:49:52 UTC, Vinod K Chandran
wrote:
[...]
No can do :(. Well, moderators can delete posts so you could
try to ask them nicely in some cases but the primary way tends
to be the same as with email: send a corre
Hi all,
I need to use the macro GET_X_LPARAM. But compiler says that
"undefined identifier GET_X_LPARAM". I cant find any modules with
GET_X_LPARAM defined. Do i miss something ?
On Thursday, 21 May 2020 at 18:42:47 UTC, Vinod K Chandran wrote:
Hi all,
I need to use the macro GET_X_LPARAM. But compiler says that
"undefined identifier GET_X_LPARAM". I cant find any modules
with GET_X_LPARAM defined. Do i miss something ?
I search all modules in "
C:\D\dmd2\src\druntim
On Thursday, 21 May 2020 at 20:12:13 UTC, Harry Gillanders wrote:
On Thursday, 21 May 2020 at 18:42:47 UTC, Vinod K Chandran
wrote:
Hi all,
I need to use the macro GET_X_LPARAM. But compiler says that
"undefined identifier GET_X_LPARAM". I cant find any modules
with GET_X_LPARAM defined. Do i
Hi all,
I have a windows gui setup like this;
class EventArgs {} \\ Base class for all messages
class MouseEventArgs : EventArgs { // child class for handling
mouse messages
...
int x;
int y;
this(WPARAM wpm, LPARAM lpm){
this.x = xFromLparam(lpm);
this.y = yF
On Friday, 22 May 2020 at 12:21:25 UTC, rikki cattermole wrote:
if (Child child = cast(Child)parent) {
assert(child !is null);
}
Actually, problem occurs in addHandler function. It expects an
argument of type "EventArgs", not MouseEventArgs.
On Friday, 22 May 2020 at 16:12:12 UTC, Steven Schveighoffer
wrote:
On 5/22/20 9:10 AM, Vinod K Chandran wrote:
On Friday, 22 May 2020 at 12:21:25 UTC, rikki cattermole wrote:
if (Child child = cast(Child)parent) {
assert(child !is null);
}
Actually, problem occurs in addHandler function.
On Friday, 22 May 2020 at 20:06:20 UTC, Adam D. Ruppe wrote:
On Friday, 22 May 2020 at 20:04:24 UTC, Vinod K Chandran wrote:
sampleList.Add(New Child(10.5)) Is this possible in D without
casting ?
Direct translation of this code works just fine in D.
Yeah, my bad. I just checked in D. But th
On Friday, 22 May 2020 at 20:51:20 UTC, Steven Schveighoffer
wrote:
On 5/22/20 4:04 PM, Vinod K Chandran wrote:
[...]
Yes. What you cannot do is this (which I hope doesn't compile
in VB.net, but I wouldn't be surprised):
Dim sampleList As New List(Of Child)
sampleList.Add(New Base(10))
Whi
On Friday, 22 May 2020 at 22:44:17 UTC, H. S. Teoh wrote:
On Fri, May 22, 2020 at 09:39:16PM +, Vinod K Chandran via
Digitalmars-d-learn wrote: [...]
So in the same manner, i want
void function(Base) = fnPtr wiil work with
void function(Child)
You cannot, because that's type u
On Friday, 22 May 2020 at 22:40:50 UTC, Steven Schveighoffer
wrote:
On 5/22/20 5:39 PM, Vinod K Chandran wrote:
[...]
That is the opposite of what you are thinking. A function
pointer has to be valid based on its parameter types. Covariant
functions are allowed.
This is OK:
void function(
Hi all,
I have a class like this.
class Button : Control {
...
HWND createButton(){
...
SetWindowSubclass(this.mHandle, SUBCLASSPROC(&btnWndProc),
UINT_PTR(subClsID), cast(DWORD_PTR) this);
}
}
But compiler says that - "Error: 'this' is not an lvalue an
On Sunday, 24 May 2020 at 17:40:10 UTC, bauss wrote:
On Sunday, 24 May 2020 at 17:05:16 UTC, Vinod K Chandran wrote:
[...]
I think your issue might be elsewhere because casting this
should be fine and it should not complain about that in your
given code.
At least you should be able to pass
On Monday, 25 May 2020 at 16:54:11 UTC, Mike Parker wrote:
On Monday, 25 May 2020 at 16:26:31 UTC, Vinod K Chandran wrote:
[...]
The error has nothing to do with taking a pointer to `this`.
It's suggesting that somewhere in your code you're attempting
to use the `this` reference like an lva
On Monday, 25 May 2020 at 18:42:33 UTC, bauss wrote:
On Monday, 25 May 2020 at 17:14:13 UTC, Vinod K Chandran wrote:
On Monday, 25 May 2020 at 16:54:11 UTC, Mike Parker wrote:
[...]
Hi @Mike Parker,
Thank you for your valuable suggestions. I will sure follow
them. Well, the exact line numbe
On Monday, 25 May 2020 at 21:45:39 UTC, welkam wrote:
On Sunday, 24 May 2020 at 17:05:16 UTC, Vinod K Chandran wrote:
cast(DWORD_PTR) this);
Where is DWORD_PTR defined? I cant find it in docs. If its an
alias of long then you have to cast to a pointer like this
cast(long*) this;
you need to
On Monday, 25 May 2020 at 22:04:28 UTC, Adam D. Ruppe wrote:
On Monday, 25 May 2020 at 21:45:39 UTC, welkam wrote:
Where is DWORD_PTR defined?
it is a win32 thing. should be able to directly cast to it most
the time
if there is opCast on the class it needs another layer of
helper function
On Monday, 25 May 2020 at 22:54:32 UTC, Adam D. Ruppe wrote:
On Monday, 25 May 2020 at 22:31:00 UTC, Vinod K Chandran wrote:
A dword is an unsigned, 32-bit unit of data. We can use uint
in D. I have tried that too, but no luck.
A DWORD_PTR is *not* the same as a uint. It is more like a
size_t
On Monday, 25 May 2020 at 18:42:33 UTC, bauss wrote:
On Monday, 25 May 2020 at 17:14:13 UTC, Vinod K Chandran wrote:
On Monday, 25 May 2020 at 16:54:11 UTC, Mike Parker wrote:
[...]
Hi @Mike Parker,
Thank you for your valuable suggestions. I will sure follow
them. Well, the exact line numbe
On Monday, 25 May 2020 at 16:39:30 UTC, Mike Parker wrote:
On Monday, 25 May 2020 at 08:39:23 UTC, John Burton wrote:
I believe that in D *this* is a reference to the
object and not a pointer like in C++.
So I think that writing &this might be what you need?
No. A class reference is a pointer
On Tuesday, 26 May 2020 at 12:41:20 UTC, John Chapman wrote:
On Monday, 25 May 2020 at 16:26:31 UTC, Vinod K Chandran wrote:
Here is my full code. Please take a look.
https://pastebin.com/av3nrvtT
Change line 124 to:
SetWindowSubclass(this.mHandle, SUBCLASSPROC(&btnWndProc),
UINT_PTR(subClsI
On Tuesday, 26 May 2020 at 12:08:29 UTC, Johannes Loher wrote:
On Tuesday, 26 May 2020 at 11:44:58 UTC, Vinod K Chandran wrote:
[...]
[...]
It doesn't compile, the line
string mt
[...]
Hi,
Sorry for the typos in my code.
On Tuesday, 26 May 2020 at 13:37:22 UTC, Vinod K Chandran wrote:
On Tuesday, 26 May 2020 at 12:41:20 UTC, John Chapman wrote:
On Monday, 25 May 2020 at 16:26:31 UTC, Vinod K Chandran wrote:
Here is my full code. Please take a look.
https://pastebin.com/av3nrvtT
Change line 124 to:
SetWindowS
On Tuesday, 26 May 2020 at 13:44:24 UTC, Adam D. Ruppe wrote:
On Tuesday, 26 May 2020 at 11:35:23 UTC, Vinod K Chandran wrote:
Okay, but uint is working perfectly.
It won't if you use -m64.
Okay. I got it.
On Tuesday, 26 May 2020 at 13:48:52 UTC, ag0aep6g wrote:
On 26.05.20 15:43, Vinod K Chandran wrote:
So far now, two solutions are very clear for this problem.
1. As per John Chapman's suggestion - use
cast(DWORD_PTR)cast(void*)this).
2. Use another varibale to use as an lvalue. -
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