如何使用 GTK 更新 gtk.Button 中的图像#
好吧,我正在开发一个简单的应用程序,用于在单声道中启动/停止和重新启动我的 LAMP(只是为了更多地了解单声道的 GUI 开发),因此为了减少按钮,我决定使用一个按钮来启动和停止服务器。在GUI设计器中我添加了一个带有图标的开始按钮,问题是更新按钮标签很容易,但是将图像更改为Stock.MediaStop就有点问题了。那么如何在点击事件的按钮中更改库存图像(它不会衡量它实际上是什么类型的事件)。这里有一些代码: 按钮的 GUI XML:
<widget class="Gtk.Button" id="button1">
<property name="MemberName" />
<property name="CanFocus">True</property>
<property name="Type">TextAndIcon</property>
<property name="Icon">stock:gtk-media-play Menu</property>
<property name="Label" translatable="yes">Start</property>
<property name="UseUnderline">True</property>
<signal name="Clicked" handler="OnMysqlServerStartStop" />
</widget>
下面是 MediaDevelop 如何使用自定义文本制作 Stock 按钮:
// Container child hbox1.Gtk.Box+BoxChild
this.hbuttonbox1 = new Gtk.HButtonBox();
this.hbuttonbox1.Name = "hbuttonbox1";
// Container child hbuttonbox1.Gtk.ButtonBox+ButtonBoxChild
this.button1 = new Gtk.Button();
this.button1.CanFocus = true;
this.button1.Name = "button1";
this.button1.UseUnderline = true;
// Container child button1.Gtk.Container+ContainerChild
Gtk.Alignment w2 = new Gtk.Alignment(0.5F, 0.5F, 0F, 0F);
// Container child GtkAlignment.Gtk.Container+ContainerChild
Gtk.HBox w3 = new Gtk.HBox();
w3.Spacing = 2;
// Container child GtkHBox.Gtk.Container+ContainerChild
Gtk.Image w4 = new Gtk.Image();
w4.Pixbuf = Stetic.IconLoader.LoadIcon(this, "gtk-media-play", Gtk.IconSize.Menu, 16);
w3.Add(w4);
// Container child GtkHBox.Gtk.Container+ContainerChild
Gtk.Label w6 = new Gtk.Label();
w6.LabelProp = Mono.Unix.Catalog.GetString("Start");
w6.UseUnderline = true;
w3.Add(w6);
w2.Add(w3);
this.button1.Add(w2);
this.hbuttonbox1.Add(this.button1);
Well I was working on simple application for starting/stopping and restarting my LAMP in mono (just to get knowing the GUI development with mono bit more), so to have less buttons I decided to have one button for starting and stopping the servers. In the GUI designer I added a start button with icon, the problem is that updating the button label is easy, but changing the image to Stock.MediaStop is a bit of a problem. So How to change the stock image in a button on click event (it doesn't meter on what kind of event it is actually). Here some code:
The GUI XML for a button:
<widget class="Gtk.Button" id="button1">
<property name="MemberName" />
<property name="CanFocus">True</property>
<property name="Type">TextAndIcon</property>
<property name="Icon">stock:gtk-media-play Menu</property>
<property name="Label" translatable="yes">Start</property>
<property name="UseUnderline">True</property>
<signal name="Clicked" handler="OnMysqlServerStartStop" />
</widget>
And here how MediaDevelop made the Stock button with custom text:
// Container child hbox1.Gtk.Box+BoxChild
this.hbuttonbox1 = new Gtk.HButtonBox();
this.hbuttonbox1.Name = "hbuttonbox1";
// Container child hbuttonbox1.Gtk.ButtonBox+ButtonBoxChild
this.button1 = new Gtk.Button();
this.button1.CanFocus = true;
this.button1.Name = "button1";
this.button1.UseUnderline = true;
// Container child button1.Gtk.Container+ContainerChild
Gtk.Alignment w2 = new Gtk.Alignment(0.5F, 0.5F, 0F, 0F);
// Container child GtkAlignment.Gtk.Container+ContainerChild
Gtk.HBox w3 = new Gtk.HBox();
w3.Spacing = 2;
// Container child GtkHBox.Gtk.Container+ContainerChild
Gtk.Image w4 = new Gtk.Image();
w4.Pixbuf = Stetic.IconLoader.LoadIcon(this, "gtk-media-play", Gtk.IconSize.Menu, 16);
w3.Add(w4);
// Container child GtkHBox.Gtk.Container+ContainerChild
Gtk.Label w6 = new Gtk.Label();
w6.LabelProp = Mono.Unix.Catalog.GetString("Start");
w6.UseUnderline = true;
w3.Add(w6);
w2.Add(w3);
this.button1.Add(w2);
this.hbuttonbox1.Add(this.button1);
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我明白为什么你在这里遇到这么多麻烦了。我以为你可以只设置按钮的图像和文本属性,但似乎你可以显示标签或显示图像,但不能同时显示两者。标签会覆盖图像。我认为只有在主题设置要求时才会显示图像。这同样适用于标签。您可以将两者结合起来,仅一个标签或仅一个图像。全部由您使用的主题设置。
您走在正确的轨道上,此示例代码应该可以回答您的查询。
I can see why you are having so much trouble here. I thought you could just set the image and text properties of the button, but it seems you can have a label showing or a image showing, but not both. The label overwrites the image. I think the image will show only if the theme settings request it to. The same applies to the label. You can have a combination of the both, only a label or only a image. All set by the theme your using.
You are on the right track here, this sample code should answer your query.