How to make NSOpenPanel accept keyboard and mouse events in objective-c? - c++

Question

I have C++ console application getting written in XCode, and I need to open a file selector dialog. To do this I'm using Cocoa with objective-c. I'm trying to open an NSOpenPanel to use it for this purpose. I'm using the following code currently:
const char* openDialog()
{
NSOpenPanel* openDlg = [NSOpenPanel openPanel];
[openDlg setCanChooseFiles:YES];
[openDlg setFloatingPanel:YES];
if ( [openDlg runModal] == NSOKButton )
{
for( NSURL* URL in [openDlg URLs] )
{
NSLog( #"%#", [URL path] );
return [URL.path UTF8String];
}
}
return NULL;
}
This works, however the created file selector doesnt accept mouse and keyboard events properly. It's hard to explain, but for example when I run the code from XCode when hovering above the window the mouse still behaves as if were in XCode, showing the caret symbol. When i run the application from the terminal whenever I type something it sends the input to the terminal, even though the file selector is "in front". Command clicking gives the mouse events properly to the file selector though.
I looked through NSOpenPanel's documentation and googled the problem extensively but I couldn't find an answer to this.

Answer 1

/*
To run in Terminal: clang openpanel.m -fobjc-arc -framework Cocoa -o openpanel && ./openpanel
*/
#import <Cocoa/Cocoa.h>
int main() {
NSApplication *application = [NSApplication sharedApplication];
[application setActivationPolicy:NSApplicationActivationPolicyAccessory];
NSOpenPanel* openDlg = [NSOpenPanel openPanel];
[openDlg setCanChooseFiles:YES];
[openDlg setFloatingPanel:YES];
if ( [openDlg runModal] == NSModalResponseOK ) {
for( NSURL* URL in [openDlg URLs] ) {
NSLog( #"%#", [URL path] );
}
}
return 0;
}
Thanks to #Willeke.