Comments by R1S8K - CodeProject

R1S8K 23-Dec-23 3:27am View

I converted the code to work in C.

I have now one issue where I want to embed your code in my project. But I want to understand this line and convert it to if statement style:

HWND hWndFrom = nCmdId == GO_PAGE_1 ? hMainPage : nCmdId == GO_PAGE_2 ? hPage_1 : hPage_2;

Can you explain how this line works ? and how to convert it to if statement style ?

R1S8K 25-Nov-23 7:17am View

What should I change if I want to run in C style ?

R1S8K 23-Nov-23 4:17am View

OK, I ran the code in C++ and changed the wWINMAIN to this one:

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR args, int nCmdShow)

and it's working, the example runs smoothly and I got the idea. Now I need just to get the grasp on the example and embed it in my code.

R1S8K 23-Nov-23 4:11am View

OK, I think your code is in C++

R1S8K 23-Nov-23 4:08am View

I got these errors:


-------------- Build: Release in code_project_example (compiler: GNU GCC Compiler)---------------

gcc.exe -Wall -O2  -c "D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c" -o obj\Release\main.o
gcc.exe  -o bin\Release\code_project_example.exe obj\Release\main.o  -s  
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c: In function 'CreatePage':
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:32:3: error: 'reinterpret_cast' undeclared (first use in this function)
   reinterpret_cast<hmenu>(uWindowId), // menu handle or child identifier
   ^~~~~~~~~~~~~~~~
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:32:3: note: each undeclared identifier is reported only once for each function it appears in
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:32:20: error: expected expression before 'HMENU'
   reinterpret_cast<hmenu>(uWindowId), // menu handle or child identifier
                    ^~~~~
In file included from D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/winnt.h:9,
                 from D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/minwindef.h:163,
                 from D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/windef.h:8,
                 from D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/windows.h:69,
                 from D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:1:
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:25:9: error: too few arguments to function 'CreateWindowExA'
  hWnd = CreateWindowEx(
         ^~~~~~~~~~~~~~
In file included from D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/windows.h:72,
                 from D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:1:
D:/Program_Files/CodeBlocks/MinGW/x86_64-w64-mingw32/include/winuser.h:2137:26: note: declared here
   WINUSERAPI HWND WINAPI CreateWindowExA(DWORD dwExStyle,LPCSTR lpClassName,LPCSTR lpWindowName,DWORD dwStyle,int X,int Y,int nWidth,int nHeight,HWND hWndParent,HMENU hMenu,HINSTANCE hInstance,LPVOID lpParam);
                          ^~~~~~~~~~~~~~~
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c: In function 'OnCreate':
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:50:23: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
  WNDCLASSEX wndClassEx{}; // class structure
                       ^
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:51:2: error: 'wndClassEx' undeclared (first use in this function); did you mean 'ReadClassStm'?
  wndClassEx.cbSize = sizeof wndClassEx;
  ^~~~~~~~~~
  ReadClassStm
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:53:27: error: 'reinterpret_cast' undeclared (first use in this function)
  wndClassEx.lpfnWndProc = reinterpret_cast<wndproc>(GetWindowLongPtr(hWnd, GWLP_WNDPROC));
                           ^~~~~~~~~~~~~~~~
D:\Programming\desktop_programming\C\windows api programming\code_project_example\code_project_example\main.c:53:44: error: expected expression before 'WNDPROC'
  wndClassEx.lpfnWndProc = reinterpret_cast<wndproc>(GetWindowLongPtr(hWnd, GWLP_WNDPROC));
                                            ^~~~~~~
...

R1S8K 22-Nov-23 9:37am View

I have the forger's pdf file and I checked its content.

But I don't know which part explains how to develop parent and child windows, and how to control the visibility of the window. I think the tutorial covers the basic concepts about windows api programming.

If you know the section please tell me which one ? or of you know a certain tutorial that explain my specific issue.

R1S8K 22-Nov-23 6:55am View

Where to put the client window and please give me the line of code of how to set the parameters of the function.

Also how to change the parameter from visible to non-visible at run time ?

R1S8K 22-Nov-23 5:53am View

I'm sorry I didn't clear my main goal.

I'm trying to simulate a touch screen system, like this one:

https://i.ytimg.com/vi/7yzwKZgNqBg/maxresdefault.jpg

It's just to help me debug my embedded system display management.

R1S8K 22-Nov-23 5:35am View

How to do that on the same window without doing them in pop-up windows ?

I just want to know how to clear the window, so I can print new stuff. I'm sure there's a function that can do that.

R1S8K 22-Nov-23 4:01am View

There are 3 pages: main_page, page1 and page2.

I'm simulating any system based on paging. It's like any menu contains a main system list.

Take this youtube video as an example:
https://www.youtube.com/watch?v=9Ms59ofSJIY

There are 3 buttons on the main page: distance, RGB control and a game.

So when I press one of the buttons I should transfer from the main page to the sub-page, and then I should have a button to go back to the main menu. That's my problem in win32 api, which is when I go back to the main_page, there are buttons left from page1 and page2.

R1S8K 22-Nov-23 3:10am View

I added the code.

R1S8K 29-Aug-21 12:14pm View

So, is it the same to pass array vs pass with a pointer ?
Now, where would I need a pointer ? And why I'm using dynamic allocation ?

--------------------------------------------------------------------------

My project briefing:
I want to develop a task manager that receive the input settings about how many tasks in the application + list of arguments for each task.

The struct for my task manager done with coroutine strategy:

// type defs
typedef enum {NOT_FINISHED, FINISHED}STATE;
typedef bool (*FPTR)();
typedef void ARGS;
// variables

// structs
typedef struct __attribute__((__packed__)) COROUTINE{
STATE c_st; // Coroutine state
uint8_t t_cts; // task counts
uint8_t t_ctr; // task counter
} COROUTINE;

I edited this struct which was before like this:

// type defs
typedef enum {NOT_FINISHED, FINISHED}STATE;
typedef bool (*FPTR)();
typedef void ARGS;
// variables

// structs
typedef struct __attribute__((__packed__)) COROUTINE{
uint8_t t_cts; // task counts
uint8_t t_ctr; // task counter
STATE c_st; // Coroutine flag states
STATE *t_st; // Coroutine tasks states
FPTR *t_fp; // Coroutine function pointer
ARGS *t_args; // pointer to list of tasks args
} COROUTINE;

So, I thought why would I have to allocate memory for the tasks and the linked state for each task ? So I removed the function pointer and state struct members.

But now I have to redesign the code and think of a way to call the functions and pass the required arguments.

My main goal is to manager the call of functions based on whether to run them in a thread, sequentially or in round-robin multitask.

R1S8K 28-Aug-21 20:53pm View

Thanks for you comment.

1. I actually want to run a task manager for embedded programming. So to check the functions in the task manager library, I have to store the functions' addresses in functions pointers.
2. But the big problem now is that how to get the arguments for each function ?
3. Could you please send me the link for your project ?

R1S8K 8-Aug-16 7:45am View

Deleted

Thank you very much for the answer, I freaked out last night because I was searching and looking into the eBooks for the exercise or example about this specific action. And I couldn't, then this morning I told the trainer about it and he solve it right away! It's very simple.

void print_array(char *arr[],int8_t cnt);
void print_array(char *arr[],int8_t cnt)
{
int8_t i;
printf("Number of elements is: %d\n",cnt);
for (i=0;i

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