public bool IsPrinterBusy(string driverName, int timeoutInSeconds)
{
bool ready = false;
int errors = 0;
ZBRGraphics graphics;
ASCIIEncoding ascii;
try {
graphics = new ZBRGraphics();
ascii = new ASCIIEncoding();
for (int i = 0; i < timeoutInSeconds; i++) { //ascii.GetBytes() encodes the string to a sequence of bytes
if (graphics.IsPrinterReady(ascii.GetBytes(driverName), out errors) != 0) {
ready = true;
break;
}
Thread.Sleep(1000);
}
} catch (Exception e) {
ready = false;
MessageBox.Show(e.ToString());
} finally {
graphics = null;
ascii = null;
}
return ready;
}
public void Print(string driverName, string name, string userID, string userPicture, bool admin, out string msg)
{
int error;
ZBRGraphics graphics = null;
ASCIIEncoding ascii;
msg = "";
try {
int fontStyle = BOLD;
graphics = new ZBRGraphics();
ascii = new ASCIIEncoding();
//Initialize Graphics
if (graphics.InitGraphics(ascii.GetBytes(driverName), out error) == 0) {
msg = "InitGraphics method error code: " + error.ToString();
return;
}
//DrawImage(location of image, X coordinate, Y coordinate, length, width, out error)
if (admin == false){ //Does the user have admin? No
if (graphics.DrawImage(ascii.GetBytes(Application.StartupPath + "\\Student.png"), 350, 30, 400, 50, out error) == 0) {
msg = "DrawImage method error code: " + error.ToString();
return;
}
} else { //They do have admin
if (graphics.DrawImage(ascii.GetBytes(Application.StartupPath + "\\Admin.png"), 350, 30, 400, 50, out error) == 0) {
msg = "DrawImage method error code: " + error.ToString();
return;
}
}
//DrawImage(location of image, X coordinate, Y coordinate, length, width, out error)
if (graphics.DrawImage(ascii.GetBytes(userPicture), 30, 30, 200, 150, out error) == 0) {
msg = "DrawImage method error code: " + error.ToString();
return;
}
//DrawText(X Coordinate, Y Coordinate, String, Font type, font size, fontStyle, color, out error)
if (graphics.DrawText(35, 575, ascii.GetBytes(name), ascii.GetBytes("Arial"), 12, fontStyle, 0xFF0000, out error) == 0){
msg = "DrawText method error code: " + error.ToString();
return;
}
//DrawBarcode(X Coordinate, Y Coordinate, rotation, barcode type, width ratio, multiplier, height, text under, barcode data, out error)
if (graphics.DrawBarcode(35, 500, 0, 0, 3, 6, 90, 0, ascii.GetBytes(userID), out error) == 0){
msg = "DrawBarcode method error code: " + error.ToString();
return;
}
if (graphics.PrintGraphics(out error) == 0) {
msg = "PrintGraphics Error: " + error.ToString();
return;
}
} catch (Exception e) {
MessageBox.Show(e.ToString());
} finally {
ascii = null;
if (graphics != null) {
if (graphics.CloseGraphics(out error) == 0) {
msg = "CloseGraphics method error code: " + error.ToString();
}
graphics = null;
}
}
}
public string GetSDKGraphicsVersion()
{
ZBRGraphics graphics = null;
int major, minor, engLevel;
string gVersion = "";
try {
graphics = new ZBRGraphics();
graphics.GetSDKVer(out major, out minor, out engLevel);
if (major > 0 || minor > 0 || engLevel > 0) {
gVersion = major.ToString() + "." + minor.ToString() + "." + engLevel.ToString();
}
} catch (Exception e) {
MessageBox.Show(e.ToString());
} finally {
graphics = null;
}
return gVersion;
}
const int UNDERLINE = 0x04; //extended formatting hex stored as underline variable (used to underline text)
#endregion Fields
#region Methods
public string GetSDKGraphicsVersion()
{
// method called on FrmMain.cs in order to obtain graphics version
ZBRGraphics graphics = null; //creates graphics variable from the ZBRGraphics.cs class initialized to null
int major, minor, engLevel; //integers to hold major, minor, and engine level DLL values of the ZBRGraphics class
string gVersion = ""; //creates gVersion string initialized to an empty string, used to hold final graphics version numerical data
try {
graphics = new ZBRGraphics(); //creates new ZBRGraphics object and stores in graphics
graphics.GetSDKVer(out major, out minor, out engLevel); //calls to the getSDKVer method of graphics, passing major, minor, and engine level variables by reference
if (major > 0 || minor > 0 || engLevel > 0) { //if major, minor, or engine levels have values that's greater than their default values of 0...
gVersion = major.ToString() + "." + minor.ToString() + "." + engLevel.ToString();
//convert all three values to string, concatenated with a period seperating each, and store the whole string value in gVersion variable - it will appear in label on About page
}
} catch (Exception e) { //exceotion handler
MessageBox.Show(e.ToString()); //catches and displays resulting errors to prevent program crash
} finally { //finally block runs whether there is an exception or not
graphics = null; //sets graphics object to null after it has been used
}
return gVersion; //return resulting graphics DLL version string
}
