Can you help me improve the example?

[katomasa1254]

Hi I'm Japanese, so sorry if my English is wrong. And this is my first time to use github, so sorry if manners are wrong.

I'm try to display GUI window with WALK(github.com/lxn/walk). But there is a problem dose not go well.

If you run this code, maybe the window displayed upper left of screen. I want to set the position of the window in center of screen. What should i do? Please improve this code.

` import ( "github.com/lxn/walk" . "github.com/lxn/walk/declarative" )

type MyLoadWindow struct { walk.MainWindow progressBar walk.ProgressBar }

func Main() { mw := &MyLoadWindow{}

// 画面情報設定
MW := MainWindow{
    AssignTo: &mw.MainWindow, // Widgetを実体に割り当て
    Title:    "コンピュータの情報を取得中",
    Size: Size{
        300,
        100},
    Font:   Font{PointSize: 12},
    Layout: VBox{},

    Children: []Widget{ // ウィジェットを入れるスライス

        ProgressBar{
            AssignTo:    &mw.progressBar,
            MarqueeMode: true,
        },
    },
}

if _, err := MW.Run(); err != nil {
    println("Error")
    return
}

} `

[lxn]

Hi, thanks for giving walk a try!

Over the course of the next few days I hope to add something to make this easy. When it's done, I will let you know.

[katomasa1254]

Hi, Thank you for replying.

It is my first time to use GO, so I was in trouble to do anything. But "wark" make me easy to used GUI for windows. I am grateful to you for the creator.

And I am even more happy if improvement is made.

[wshon]

I have a solution. I don't know if the teacher can help you.

package main

import (
    "github.com/lxn/walk"
    . "github.com/lxn/walk/declarative"
    "github.com/lxn/win"
    "log"
)

type MyLoadWindow struct {
    *walk.MainWindow
    progressBar *walk.ProgressBar
}

func main() {
    mw := &MyLoadWindow{}

    // 画面情報設定
    if err := (MainWindow{
        AssignTo: &mw.MainWindow, // Widgetを実体に割り当て
        Title:    "コンピュータの情報を取得中",
        Size:     Size{Width: 300, Height: 100},
        Visible:  false,
        Font:     Font{PointSize: 12},
        Layout:   VBox{},

        Children: []Widget{ // ウィジェットを入れるスライス

            ProgressBar{
                AssignTo:    &mw.progressBar,
                MarqueeMode: true,
            },
        },
    }).Create(); err != nil {
        log.Print(err)
    }

    screenX := int(win.GetSystemMetrics(win.SM_CXSCREEN))
    screenY := int(win.GetSystemMetrics(win.SM_CYSCREEN))
    if err := mw.MainWindow.SetBounds(walk.Rectangle{
        X:      (screenX - mw.MainWindow.Width()) / 2,
        Y:      (screenY - mw.MainWindow.Height()) / 2,
        Width:  mw.MainWindow.Width(),
        Height: mw.MainWindow.Height(),
    }); err != nil {
        log.Print(err)
        return
    }

    mw.MainWindow.SetVisible(true)
    mw.MainWindow.Run()

}

[wshon]

Getting screen size information through win.GetSystemMetrics(win.SM_CXSCREEN) and win.GetSystemMetrics(win.SM_CYSCREEN), The position of the window is reset according to the size information obtained. But before you reset the window, you need to hide it, otherwise there will be flickering。

[katomasa1254]

Hi, Thank you for the advice! I made the following code based on your opinion.

` func Main() { mw := &MyLoadWindow{} // 画面情報設定 MW := MainWindow{ AssignTo: &mw.MainWindow, // Widgetを実体に割り当て Title: "コンピュータの情報を取得中", Font: Font{PointSize: 12}, Layout: VBox{}, Icon: icon, OnBoundsChanged: func() {

        // 画面の縦と横のサイズを取得
        scrWidth := win.GetSystemMetrics(win.SM_CXSCREEN)
        scrHeight := win.GetSystemMetrics(win.SM_CYSCREEN)

        // 描画開始位置を設定
        mw.MainWindow.SetBounds(walk.Rectangle{
            X:      int((scrWidth - sizeX) / 2),
            Y:      int((scrHeight - sizeY) / 2),
            Width:  sizeX,
            Height: sizeY,
        })
    },

    Children: []Widget{ // ウィジェットを入れるスライス

        ProgressBar{
            AssignTo:    &mw.progressBar,
            MarqueeMode: true,
        },
    },
}

if _, err := MW.Run(); err != nil {
    common.ErrorLogger(prop.CheckerConfig.ManualSaveLogName, "画面表示エラー"+err.Error())
    return
}

`

I can set the position of the window in center. This code made me happy. But a new problem has occurred...

When the window is displayed, I cant move this window. I want to move freely.

Some one Please tell me about solution.