我创建了两个gtkmm按钮并添加到HBox对象中。我打电话给pack_end,并保持大小为21,20。但是,尺寸不会保持。这是我写的代码和我在运行程序时获得的窗口。gtkmm按钮没有保持大小和位置
注:mywindow的是的GTK子::窗口
空隙mywindow的:: customizeTitleBar() { //创建垂直框 的Gtk ::垂直框* VBOX =新的Gtk: :垂直框(FALSE,0);
//create a horizontal box
Gtk::HBox *hBox = new Gtk::HBox(TRUE,0);
hBox->set_border_width(5);
//create title bar image
Gtk::Image *titleBarImage = new Gtk::Image("src/WindowTitleBar.png");
titleBarImage->set_alignment(Gtk::ALIGN_LEFT);
// hBox-> pack_start(* titleBarImage,GTK :: PACK_EXPAND_WIDGET,0);
//create cloze button for window
mButtonClose = new Gtk::Button;
(*mButtonClose).set_size_request(21,20);
Gtk::Image *mImage = new Gtk::Image("src/Maximize.jpeg");
(*mButtonClose).add(*mImage);
(*mButtonClose).set_image_position(Gtk::POS_TOP);
// connecting close window function when cliked on close button
//(*mButtonClose).signal_clicked().connect(sigc::mem_fun(this, &MYWindow::closeWindow));
hBox->pack_end(*mButtonClose,Gtk::PACK_EXPAND_WIDGET,0);
Gtk::Button * mBtton = new Gtk::Button;
mBtton->set_size_request(21,20);
Gtk::Image *img = new Gtk::Image("src/Maximize.jpeg");
mBtton->add(*img);
mBtton->set_image_position(Gtk::POS_TOP);
hBox->pack_end(*mBtton,Gtk::PACK_EXPAND_WIDGET,0);
vBox->add(*hBox);
//drawing area box
Gtk::HBox *hBoxDrawingArea = new Gtk::HBox;
Gtk::DrawingArea *mDrawingArea = new Gtk::DrawingArea;
hBoxDrawingArea->pack_start(*mDrawingArea,Gtk::PACK_EXPAND_WIDGET,0);
vBox->add(*hBoxDrawingArea);
//status bar hBox
Gtk::HBox *hBoxStatusBar = new Gtk::HBox;
vBox->add(*hBoxStatusBar);
this->add(*vBox);
this->show_all();
}