xtd - Reference Guide  0.1.0
Modern c++17/20 framework to create console, GUI and unit test applications on Windows, macOS, Linux, iOS and android.
image_list.cpp

The following code example demonstrate the use of image_list class.

Windows
image_list_w.png

image_list_wd.png
macOS
image_list_m.png

image_list_md.png
Gnome
image_list_g.png

image_list_gd.png
#include <xtd/xtd>
using namespace xtd;
using namespace xtd::drawing;
using namespace xtd::forms;
namespace example {
class form1 : public form {
public:
form1() {
text("Image list example");
client_size({300, 250});
controls().push_back_range({picture, button_previous, button_next});
pictures.image_size({128, 128});
picture.back_color(system_colors::window());
picture.border_style(forms::border_style::fixed_3d);
picture.bounds({75, 25, 150, 150});
picture.size_mode(picture_box_size_mode::center_image);
picture.click += [&] {
load_images();
};
button_previous.auto_repeat(true);
button_previous.image(button_images::previous());
button_previous.location({75, 200});
button_previous.enabled(false);
button_previous.click += [&] {
if (current_image_index > 0) picture.image(pictures.images()[--current_image_index]);
button_previous.enabled(current_image_index > 0);
button_next.enabled(current_image_index < pictures.images().size() - 1);
};
button_next.auto_repeat(true);
button_next.image(button_images::next());
button_next.location({150, 200});
button_next.enabled(false);
button_next.click += [&] {
if (current_image_index < pictures.images().size()) picture.image(pictures.images()[++current_image_index]);
button_previous.enabled(current_image_index > 0);
button_next.enabled(current_image_index < pictures.images().size() - 1);
};
show();
load_images();
}
private:
void load_images() {
ofd.multiselect(true);
ofd.filter("All Image Files|*.bmp;*.gif;*.jpg;*.jpeg;*.png;*.tif;*.tiff;*.xpm|Bitmap Files|*.bmp|Gif Files|*.gif|Jpeg Files|*.jpg;*.jpeg|Png Files|*.png|Tiff Files|*.tif;*.tiff|xpm Files|*.xpm");
if (ofd.show_dialog() == dialog_result::ok) {
pictures.images().clear();
for (auto file : ofd.file_names())
pictures.images().push_back(drawing::image::from_file(file));
current_image_index = 0;
picture.image(pictures.images()[current_image_index]);
button_previous.enabled(current_image_index > 0);
button_next.enabled(current_image_index < pictures.images().size() - 1);
}
}
size_t current_image_index = 0;
image_list pictures;
picture_box picture;
button button_previous;
button button_next;
};
}
int main() {
application::run(example::form1());
}