Slider

A slider is a bar shaped element in which a much smaller bar can be moved from the lowest (0) to the highest (100) value. The text attribute of the slider is displayed in the very center of the slider bar.

API reference

The API reference of the slider widget can be found here.

Example

The following example shows how to create and use a vertical and a horizontal slider:

#include "gfx.h"
 
static GListener	gl;
static GHandle		ghSlider1, ghSlider2;
 
static void createWidgets(void) {
	GWidgetInit	wi;
 
	// Apply some default values for GWIN
	wi.customDraw = 0;
	wi.customParam = 0;
	wi.customStyle = 0;
	wi.g.show = TRUE;
 
	// create Slider1
	wi.g.y = 10; wi.g.x = 10; wi.g.width = 200; wi.g.height = 20; wi.text = "S1";
	ghSlider1 = gwinSliderCreate(NULL, &wi);
 
	// create Slider2
	wi.g.y = 40; wi.g.x = 10; wi.g.width = 20; wi.g.height = 200; wi.text = "S2";
	ghSlider2 = gwinSliderCreate(NULL, &wi);
}
 
int main(void) {
	GEvent* pe;
 
	// Initialize the display
	gfxInit();
 
	// Set the widget defaults
	gwinSetDefaultFont(gdispOpenFont("UI2"));
	gwinSetDefaultStyle(&WhiteWidgetStyle, FALSE);
	gdispClear(White);
 
	// Attach the mouse input
	gwinAttachMouse(0);
 
	// create the widget
	createWidgets();
 
	// We want to listen for widget events
	geventListenerInit(&gl);
	gwinAttachListener(&gl);
 
	while(1) {
		// Get an Event
		pe = geventEventWait(&gl, TIME_INFINITE);
 
		switch(pe->type) {
			case GEVENT_GWIN_SLIDER:
				printf("Slider %s = %d\n", gwinGetText(((GEventGWinSlider *)pe)->slider),
                                                           ((GEventGWinSlider *)pe)->position
                                      );
				break;
 
			default:
				break;
		}
	}
 
	return 0;
}