README
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新增和修改：
- 增加单实例锁，二开时将已开窗口置顶、居中
- 增加自动检测系统webview2版本，没有安装时根据提示自动安装（win7+测试正常）
- 增加弹窗MessageBox
go-webview2
This package provides an interface for using the Microsoft Edge WebView2 component with Go. It is based on webview/webview and provides a compatible API.
Please note that this package only supports Windows, since it provides functionality specific to WebView2. If you wish to use this library for Windows, but use webview/webview for all other operating systems, you could use the go-webview-selector package instead. However, you will not be able to use WebView2-specific functionality.
If you wish to build desktop applications in Go using web technologies, please consider Wails. It uses go-webview2 internally on Windows.
Demo
If you are using Windows 10+, the WebView2 runtime should already be installed. If you don't have it installed, you can download and install a copy from Microsoft's website:
After that, you should be able to run go-webview2 directly:
go run ./cmd/demo
This will use go-winloader to load an embedded copy of WebView2Loader.dll. If you want, you can also provide a newer version of WebView2Loader.dll in the DLL search path and it should be picked up instead. It can be acquired from the WebView2 SDK (which is permissively licensed.)
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Hint ¶
type Hint int
Hint is used to configure window sizing and resizing behavior.
const ( // HintNone specifies that width and height are default size HintNone Hint = iota // HintFixed specifies that window size can not be changed by a user HintFixed // HintMin specifies that width and height are minimum bounds HintMin // HintMax specifies that width and height are maximum bounds HintMax )
type WebView ¶
type WebView interface {
// Run runs the main loop until it's terminated. After this function exits -
// you must destroy the webview.
Run()
// Terminate stops the main loop. It is safe to call this function from
// a background thread.
Terminate()
// Dispatch posts a function to be executed on the main thread. You normally
// do not need to call this function, unless you want to tweak the native
// window.
Dispatch(f func())
// Destroy destroys a webview and closes the native window.
Destroy()
// Window returns a native window handle pointer. When using GTK backend the
// pointer is GtkWindow pointer, when using Cocoa backend the pointer is
// NSWindow pointer, when using Win32 backend the pointer is HWND pointer.
Window() unsafe.Pointer
// SetTitle updates the title of the native window. Must be called from the UI
// thread.
SetTitle(title string)
// SetSize updates native window size. See Hint constants.
SetSize(w int, h int, hint Hint)
// "data:text/text,<html>...</html>". It is often ok not to url-encode it
// properly, webview will re-encode it for you.
Navigate(url string)
// SetHtml sets the webview HTML directly.
// The origin of the page is `about:blank`.
SetHtml(html string)
// Init injects JavaScript code at the initialization of the new page. Every
// time the webview will open a the new page - this initialization code will
// be executed. It is guaranteed that code is executed before window.onload.
Init(js string)
// Eval evaluates arbitrary JavaScript code. Evaluation happens asynchronously,
// also the result of the expression is ignored. Use RPC bindings if you want
// to receive notifications about the results of the evaluation.
Eval(js string)
// Bind binds a callback function so that it will appear under the given name
// as a global JavaScript function. Internally it uses webview_init().
// Callback receives a request string and a user-provided argument pointer.
// Request string is a JSON array of all the arguments passed to the
// JavaScript function.
//
// f must be a function
// f must return either value and error or just error
Bind(name string, f interface{}) error
// MessageBox windows消息弹窗
MessageBox(caption, text string)
// ToTop 显示到最上层（非强制）
ToTop()
// MostTop 移动到最上层（参数为true时，强制到最上层，否则显示在其他最上层窗口后）
MostTop(isTop bool)
// RestoreWindow 还原窗口（一般为最小化后执行此方法还原窗口）
RestoreWindow()
// MoveToCenter 窗口屏幕居中
MoveToCenter()
// GetHWnd HWND的uintptr转为win.HWND
GetHWnd() win.HWND
// Webview2AutoInstall 根据需要自动下载安装webview2依赖
Webview2AutoInstall() error
// RunCall 程序退出前执行自定义回调
Start(callback func())
GetBrowser() browser
}
WebView is the interface for the webview.
Source Files
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