Is there any way to pass a callback function when calling ExecuteScript?
For example, consider the following code snippet.
This code, of course, will panic during runtime.
Could you please provide the correct way to do this?
callback := func(errorCode uintptr, resultObjectAsJson string) {
// print error and result
}
_, _, err = e.webview.vtbl.ExecuteScript.Call(
uintptr(unsafe.Pointer(e.webview)),
uintptr(unsafe.Pointer(_script)),
uintptr(unsafe.Pointer(&callback)),
)In C++, similar code looks like this:
webview->ExecuteScript(script.c_str(), Callback<ICoreWebView2ExecuteScriptCompletedHandler>([](HRESULT errorCode, LPCWSTR result) -> HRESULT {
// print error and result
return S_OK;
}).Get());However, I found that go-webview2 cannot even create ICoreWebView2ExecuteScriptCompletedHandler.
Here's the complete code:
package main
import (
"fmt"
"github.com/wailsapp/go-webview2/pkg/webview2"
)
func main() {
var handler webview2.ICoreWebView2ExecuteScriptCompletedHandler
fmt.Printf("%+v\n", handler)
}panic massage:
panic: compileCallback: argument size is larger than uintptr
goroutine 1 [running]:
syscall.compileCallback({0x6163a0?, 0x64ae70?}, 0xe0?)
C:/Program Files/Go/src/runtime/syscall_windows.go:280 +0xca
syscall.NewCallback(...)
C:/Program Files/Go/src/syscall/syscall_windows.go:214
golang.org/x/sys/windows.NewCallback(...)
C:/Users/lanye/go/pkg/mod/golang.org/x/sys@v0.8.0/windows/syscall_windows.go:140
github.com/wailsapp/go-webview2/pkg/webview2.NewComProc(...)
C:/Users/lanye/go/pkg/mod/github.com/wailsapp/go-webview2@v1.0.12/pkg/webview2/com.go:17
github.com/wailsapp/go-webview2/pkg/webview2.init()
C:/Users/lanye/go/pkg/mod/github.com/wailsapp/go-webview2@v1.0.12/pkg/webview2/ICoreWebView2AddScriptToExecuteOnDocumentCreatedCompletedHandler.go:51 +0x113
The reason seems to be the id parameter of the function in the following code is of type string, and the error disappeared after I replaced it with uintptr, however, the similar situation is common in go-webview2.
|
func ICoreWebView2AddScriptToExecuteOnDocumentCreatedCompletedHandlerInvoke(this *ICoreWebView2AddScriptToExecuteOnDocumentCreatedCompletedHandler, errorCode uintptr, id string) uintptr { |
|
return this.impl.AddScriptToExecuteOnDocumentCreatedCompleted(errorCode, id) |
|
} |
|
|
|
type ICoreWebView2AddScriptToExecuteOnDocumentCreatedCompletedHandlerImpl interface { |
|
IUnknownImpl |
|
AddScriptToExecuteOnDocumentCreatedCompleted(errorCode uintptr, id string) uintptr |
|
} |
In conclusion, I would like to know if there is any way to pass a callback function when calling ExecuteScript.
Is there any way to pass a callback function when calling
ExecuteScript?For example, consider the following code snippet.
This code, of course, will panic during runtime.
Could you please provide the correct way to do this?
In C++, similar code looks like this:
However, I found that
go-webview2cannot even createICoreWebView2ExecuteScriptCompletedHandler.Here's the complete code:
panic massage:
The reason seems to be the
idparameter of the function in the following code is of typestring, and the error disappeared after I replaced it withuintptr, however, the similar situation is common ingo-webview2.go-webview2/pkg/webview2/ICoreWebView2AddScriptToExecuteOnDocumentCreatedCompletedHandler.go
Lines 36 to 43 in 1cea6fa
In conclusion, I would like to know if there is any way to pass a callback function when calling
ExecuteScript.