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GUI/Maximum window dimensions: Difference between revisions
Gambas (imported from markhobley.yi.org)
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(Gambas (imported from markhobley.yi.org)) |
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For a tiling window manager, the values calculated should represent the maximum height and width of the display area of the maximum size a window can be created (without scrolling). This would typically be a full screen window (minus any areas occupied by desktop bars), unless the window manager has restrictions that does not allow creation of a full screen window, in which case the values represent the maximum usable area (without scrolling).
== {{header|Gambas}} ==
=== Overview ===
In gambas, the trick to determining the maximum window size that will fit on the screen is to create a form that is maximized and then query its dimensions from within a Form_Resize() event. Note that the form can be invisible during this process, and typically we would use the main modal window (FMain in this example).
=== Creating the form ===
From with the project create a form (FMain) with the following properties set:
<lang gambas>
FMain.Maximized = True
FMain.Visible = False ' The form can be invisible
</lang>
From within the projectview, rightclick the FMain form and select Edit class from the contextmenu. This will display a form class file (FMain.class) as follows:
<lang gambas>
PUBLIC SUB _new()
END
PUBLIC SUB Form_Open()
END
</lang>
Adding the form resize event
We can now add a Form_Resize() event to the class file with the necessary code to obtain the screen dimensions as follows:
<lang gambas>
PUBLIC SUB Form_Resize()
PRINT "The maximum window size that can be used is "; FMain.Width; " x "; FMain.Height
END
</lang>
== {{header|Visual Basic}} ==
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