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GUI incompatibility


From: Andreas Höschler
Subject: GUI incompatibility
Date: Wed, 13 May 2020 17:37:59 +0200

Hi Fred,

I am still trying to get my apps to work under GNUstep. I have already worked around a couple of incompatibilities between Cocoa and GNUstep that caused trouble. 

I now ended up at the following problem:

I have some NSView subclass on a window

ValueElementCarrier : ElementCarrier : ComponentCarrier : ControlCarrier : NSView

ValueElementCarrier has a subview

    FormTextField : NSTextField

over its complete rect. 

@implementation FormTextField

- (void)mouseDown:(NSEvent *)theEvent
{
   NSLog(@"%@ mouseDown ..", self);
    ...
    [super mouseDown:theEvent];
}

- (BOOL)becomeFirstResponder
{
   BOOL result = ([(FBFormWindow *)[self window] designMode] ? NO : [super becomeFirstResponder]);
   NSLog(@"%@ becomeFirstResponder %d", self, result);
   return result;
}

- (BOOL)acceptsFirstMouse: (NSEvent*)theEvent
{
   BOOL result = [super acceptsFirstMouse:theEvent];
   NSLog(@"%@ acceptsFirstMouse %d", self, result);
   return result;
}

@end


When I click on this FormTextField on MacOSX I get

13/05/20 17:23:40,783 InterfaceBuilder[93679]: <FormTextField: 0x102cd30> acceptsFirstMouse 1
13/05/20 17:23:40,783 InterfaceBuilder[93679]: <FormTextField: 0x102cd30> becomeFirstResponder 0
13/05/20 17:23:40,784 InterfaceBuilder[93679]: <FormTextField: 0x102cd30> mouseDown ..

When I do the same on GNUstep I get

13/05/20 17:23:40,783 InterfaceBuilder[93679]: <FormTextField: 0x102cd30> becomeFirstResponder 0

but no call of acceptsFirstMouse and no call of mouseDown!?  This renders my up inoperable! :-(

Any idea? Should this behaviour be fixed in GNUstep (handled equally)? 

Thanks,

 Andreas



 




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