I've made a simple command line app that requires Screen recording permission.
When I ran it from Xcode, it prompts for a permission and once I allowed it from the settings, it runs well.
#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <CoreGraphics/CGDisplayStream.h> int main() { printf("# Start #\n"); if (CGPreflightScreenCaptureAccess()) { printf("# Permitted.\n"); } else { printf("# Not permitted.\n"); if (CGRequestScreenCaptureAccess() == false) { printf("# CGRequestScreenCaptureAccess() returning false\n"); } } size_t output_width = 1280; size_t output_height = 720; dispatch_queue_t dq = dispatch_queue_create("com.domain.screengrabber", DISPATCH_QUEUE_SERIAL); CGError err; CGDisplayStreamRef sref = CGDisplayStreamCreateWithDispatchQueue( 1, output_width, output_height, 'BGRA', NULL, dq, ^( CGDisplayStreamFrameStatus status, uint64_t time, IOSurfaceRef frame, CGDisplayStreamUpdateRef ref ) { printf("Got frame: %llu, FrameStatus:%d \n", time, status); } ); err = CGDisplayStreamStart(sref); if (kCGErrorSuccess != err) { printf("Error: failed to start streaming the display. %d\n", err); exit(EXIT_FAILURE); } while (true) { usleep(1e5); } CGDisplayStreamStop(sref); printf("\n\n"); return 0; }
Now I want to execute this from terminal, so I went to the build folder and typed the app name.
cd /Users/klee/Library/Developer/Xcode/DerivedData/ScreenStreamTest-ezddqbkzhndhakadslymnvpowtig/Build/Products/Debug ./ScreenStreamTest
But I am getting following output without any prompt for permission.
# Start # # Not permitted. # CGRequestScreenCaptureAccess() returning false Error: failed to start streaming the display. 1001
Is there a something I need to consider for this type of command line app?