User:Paradox-01/Blender/Research: Difference between revisions

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@@ Line 165: / Line 165: @@
 blender-with-libraries-3.1.0\blender-3.1.0\source\blender\windowmanager\intern\wm_window.c
-A simple test of opening a dropped file with notepad:
+By default only one file of dropped ones will be detected.
+system(processFile); could be used but then Blender hangs until the child has process finished.
+Therefore let's use [https://docs.microsoft.com/de-de/windows/win32/procthread/creating-processes CreateProcess].
+ #include <windows.h>
    char processFile[255];
@@ Line 174: / Line 180: @@
              printf("drop file %s\n", stra->strings[a]);
-             strcpy(processFile, "notepad.exe " );
+             strcpy(processFile, "C:\\Windows\\system32\\notepad.exe ");
-             strcat(processFile, stra->strings[a] );
+             strcat(processFile, stra->strings[a]);
-             system(processFile);
+             // Start the child process.
+            CreateProcess(
+                // visual studio create only successful code if "L" is used before the strings
+                // don't use L with blender
+                "C:\\Windows\\system32\\notepad.exe",  // No module name (use command line)
+                processFile,                           // Command line
+                NULL,   // Process handle not inheritable
+                NULL,   // Thread handle not inheritable
+                FALSE,  // Set handle inheritance to FALSE
+,      // No creation flags
+                NULL,   // Use parent's environment block
+                NULL,   // Use parent's starting directory
+                &si,    // Pointer to STARTUPINFO structure
+                &pi);   // Pointer to PROCESS_INFORMATION structure
+            // Wait until child process exits.
+            // (in our case this is exactly what we don't want)
+            // WaitForSingleObject(pi.hProcess, INFINITE);
+            // Close process and thread handles.
+            CloseHandle(pi.hProcess);
+            CloseHandle(pi.hThread);
+            printf("file was processed");
   ...
   }
-Notepad will open with dropped file. Blender will hang and possible crash if Notepad is not closed.
+====Todo====
+) replace notepad with own exe (writing more code in C is a pain)
+) research path reading in C (get folder/file/extension) so own exe can use relative path when it is place alongside Blender
+) research Blender import and let the exe decide what py script to use (for example ONCC*.oni -> import_ONCC.py)
+ blender --background --python myscript.py
+ https://blender.stackexchange.com/questions/1365/how-can-i-run-blender-from-command-line-or-a-python-script-without-opening-a-gui
+) Deciding how to distribute this Blender variant.
-So, either the dropped files need to be processed right away or that part must be made independent using fork or create process ...
+Long-term goals could be to include Delano's addon and provide a way to automate the updating of Blender with these extras.
-* https://docs.microsoft.com/de-de/windows/win32/procthread/creating-processes