获取窗口图标，将其放在画布上，叠加图像，另存为ico（WinXP和Win7） [英] Get window icon, put it on canvas, overlay image, save as ico (WinXP and Win7)

问题描述

目前我使用此代码更改窗口的图标： GitHub - Gist :: Noitidart / _ff-addon-snippet-ChangeWindowIcon.js - Rev2

Right now I change the icon of a window with this code: GitHub - Gist :: Noitidart / _ff-addon-snippet-ChangeWindowIcon.js - Rev2

我想要做的是获取窗口正在使用的当前图标。然后把它放在画布上。然后把另一个图像（徽章），然后将其保存为ico。请帮助。

What I want to do though is get the current icon in use by a window. Then put it on a canvas. Then put another image on that (a badge) then save it as ico. Please help.

感谢

PS：
对于非firefox插件阅读，帮助，我真的很感谢C ++代码获得窗口图标，这将是一个巨大的帮助

PS: For non firefox addon people reading this you can still help, I would really appreciate C++ code to get window icon that would be a huge help

推荐答案

应该工作在一般情况下（有很多fiddling）

Never tried that, however the follow should work in general (with a lot of fiddling)

1. WM_GETICON


2. 将图标转换为加载器可以理解的内容（也就是BITMAP或ICO）。例如。 如何将HICON保存到.ico文件？


3. 载入图片。例如。 Javascript：将PNG存储为Uint8Array到无数据URI的画布元素


4. canvas.drawImage


5. canvas.mozGetAsFile （ Blob ）或 canvas.mozFetchAsStream $ c> nsIInputStream ）使用 image / vnd.microsoft.icon mime。


6. 数据和重建图标。


7. LookupIconIdFromDirectoryEx 和 CreateIconFromResourceEx


8. WM_SETICON

1. WM_GETICON to get the big and small icon.
2. Convert the icon to something the loader can understand (aka. either a BITMAP or ICO). E.g. How can I save HICON to an .ico file?
3. Load the image. E.g. Javascript: Render PNG stored as Uint8Array onto Canvas element without Data URI
4. canvas.drawImage
5. canvas.mozGetAsFile (Blob) or canvas.mozFetchAsStream (nsIInputStream) using the image/vnd.microsoft.icon mime.
6. Take the resulting data and reconstruct an icon.
7. LookupIconIdFromDirectoryEx and CreateIconFromResourceEx
8. WM_SETICON

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