Adding a canvas to NSPanelMBS

motorollin · **Joined:** Mon Jun 16, 2008 4:53 pm **Posts:** 89

Please could someone give me a clue how to add a canvas to an NSPanelMBS? I've tried using the following:

dim style as integer = NSPanelMBS.NSTitledWindowMask + NSPanelMBS.NSUtilityWindowMask + NSPanelMBS.NSHUDWindowMask

static n as NSPanelMBS = new NSPanelMBS(100,100,200,200, style, NSPanelMBS.NSWindowBackingLocationDefault, false)
n.Title = "Hello World"

static p as CustomNSViewMBS
n.contentView.addSubview p

n.Show

but I can't work out how to set the position and dimensions of the CustomNSViewMBS, nor how to draw a picture into it.

TIA

MonkeybreadSoftware · **Posted:** Mon May 31, 2010 4:05 am

If you create a new subclass from CustomNSViewMBS you can overwrite the draw event.
And the constructor of CustomNSViewMBS takes the rectangle for position and size.

Greetings
Christian

motorollin · **Joined:** Mon Jun 16, 2008 4:53 pm **Posts:** 89

Thank you Christian. I've just created a custom class of type CustomNSViewMBS, and put this in the DrawRect event:

g.SetColorRGB(255, 255, 255)
g.fillRect(0, 0, 100, 100)

As hoped, a white rectangle was drawn. I can't get a picture to draw though. I've used:

g.drawAtPoint(p, 0, 0, 0, 0, 0, 0, 1, 1.00)

in the DrawRect event, but I get Code, "Parameters are not compatible with this function". I checked the manual for the Cocoa plugin, and from what I can tell specifying all zeroes for the dimensions to draw into should draw the whole image, and I checked the Cocoa NSCompositingOperation on Apple's NSImage class reference, which stated that a value of 1 is NSCompositeCopy. I can't work out what I've done wrong

MonkeybreadSoftware · **Posted:** Mon May 31, 2010 4:55 am

Well, SetColorRGB has parameters with ranges from 0.0 to 1.0.
And for drawAtPoint the p must be a NSImageMBS object.

Greetings
Christian

motorollin · **Joined:** Mon Jun 16, 2008 4:53 pm **Posts:** 89

Thanks Christian. It's working now:

dim p as new NSImageMBS(MyPicture)
g.drawAtPoint(p, 0, 0, 0, 0, 0, 0, 1, 1.00)

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Adding a canvas to NSPanelMBS