TBalloonHint issues
I need a BalloonHint with a certain background color, and showing as a balloon, with stem. My program does NOT use Themes. How do I make this work? The TBalloonHint currently shows a a basic box. I then tried to write a descendant, so I could overwrite the PaintHint(HintWindow:TCustomHintWindow), using the orginal version in Vcl.Controls as a template. But, I do not have access to the TCustomHintWindow Canvas and other variables, which are 'private', and I do not understand why the original PaintHint DOES have access to these private variables. I do not use Themes. I need working a BalloonHint, which shows as a balloon, and has a specific background color. How do I do this? Thanks, Bart -- Bart Kindt, CEO and developer SARTrack Limited New Zealand http://www.sartrack.co.nz/
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Bart
7/9/2015 7:04:38 AM
embarcadero.delphi.general
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Bart wrote: > My program does NOT use Themes. > ... > The TBalloonHint currently shows a a basic box. That is because TBalloonHint does not draw itself as a balloon when theming is disabled. And even if it did, it uses a hard-coded background color when VCL Styles are not enabled to override the color. > But, I do not have access to the TCustomHintWindow Canvas and > other variables, which are 'private', and I do not understand why > the original PaintHint DOES have access to these private variables. Because TBalloonHint and TCustomHintWindow are implemented in the same unit, so they have implicit friendship to access each other's internals. > I need working a BalloonHint, which shows as a balloon, and has a > specific background color. > > How do I do this? I don't think you can with TBalloonHint. You will likely have to create your own TCustomHint class and draw it however you want. -- Remy Lebeau (TeamB)
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Remy
7/9/2015 9:18:20 PM
> {quote:title=Remy Lebeau (TeamB) wrote:}{quote}
> I don't think you can with TBalloonHint. You will likely have to create
> your own TCustomHint class and draw it however you want.
I tried that now. It does not work. First, all Forms and all Controls are using
CustomHint = VCL.TCustomHint.
When I overwrite this to my own CustomHint on my test form, it still only shows the original system hint, it ignores my setting in Form.Create of CustomHint := MyBalloonHint1;
Where MyBalloonHint1 is a complete copy of the original VCL structures, minus the Theme stuff.
But it is not calling it.
Also, it would be completely impossible to manually overwrite every single Control's CustomHint with my own one instead of the VCL.TCustomHint.
As a PS, is there a way to intercept an "OnHint" event, so I can write a different balloon system?
Bart
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Bart Kindt, CEO and developer
SARTrack Limited New Zealand
http://www.sartrack.co.nz/
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Bart
7/10/2015 5:35:58 AM
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Web resources about - TBalloonHint issues - embarcadero.delphi.generalResources last updated: 12/5/2015 11:45:44 PM