use getIcon for wxFrame Topic is solved

[Laurent Berger]

Hi,

I'm trying to get window icon previously by setIcon :

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wxIcon icon;
wxBitmap b(f->ImageAffichee()->Scale(64,64));
icon.CopyFromBitmap(b);
f->SetIcon(icon);
wxIcon ic2 = f->GetIcon();

wxIcon ic2 = f->GetIcon(); gives an empty icon but wxIcon is set. In debugger I don't understand this https://github.com/wxWidgets/wxWidgets/ ... #L328-L346

flags is 1 and FALLBACK_NEAREST_LARGER is 2 then iconBest cannot be set and I get back nullIcon

How to solve this problem?


My icon is set :

windows 10 64 bits VS2017 wxwidgets master

[doublemax]

You're setting a 64x64 icon. But GetIcon() will by default look for a 32x32 icon, which does not exist.

It's not clear to my why you use the "redirection" through the frame icon. Why don't you directly use the icon source?

[Laurent Berger]

icon in upper left corner of window is an image content rescaled. Image can be 3000x3000. I try to get this icon instead of rescaled twice. I think i will have to add this icon to my window class

[PB]

BTW, in case you did not know, you can store (also) the same icon with different resolutions using wxIconBundle. You can then call SetIcons with the resource bundle to set the icon for the frame.

See also here why SetIcons() may be always superior to using SetIcon()/wxICON.

[Laurent Berger]

thanks for yours answers

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wxBitmap b1(f->ImageAffichee()->Scale(64, 64));
wxBitmap b2(f->ImageAffichee()->Scale(30, 30));
wxBitmap b3(f->ImageAffichee()->Scale(16, 16));
wxIcon icon;
icon.CopyFromBitmap(b1);
wxIconBundle lotIcons(icon);
icon.CopyFromBitmap(b2);
lotIcons.AddIcon(icon);
icon.CopyFromBitmap(b3);
lotIcons.AddIcon(icon);

f->SetIcons(lotIcons);

get icon :

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        wxIconBundle iconBundle = f->GetIcons();
        wxIcon icon=iconBundle.GetIcon(wxSize(32, 32), wxIconBundle::FALLBACK_NEAREST_LARGER);

[PB]

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wxBitmap b2(f->ImageAffichee()->Scale(30, 30));

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wxIcon icon=iconBundle.GetIcon(wxSize(32, 32), wxIconBundle::FALLBACK_NEAREST_LARGER);

(Assuming the code posted reflects the real code) Is 30 instead of 32 in the first part a typo or intent?

[Laurent Berger]

Code: Select all

wxBitmap b2(f->ImageAffichee()->Scale(30, 30));

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wxIcon icon=iconBundle.GetIcon(wxSize(32, 32), wxIconBundle::FALLBACK_NEAREST_LARGER);

(Assuming the code posted reflects the real code) Is 30 instead of 32 in the first part a typo or intent?

Yes it was. I checked flag wxIconBundle::FALLBACK_NEAREST_LARGER : result is a larger icon but there is a result.