perthg
asked on
Drive Letter of Digital Camera
Hi,
How can I get the drive letter of USB drive of my Digital camera?
When the camera drive is activated I get the usual windows menu dialog for the drive. Same as the dialog when you insert a CD (Print Pictures, View SlideShow, Take no Action etc.) . My second question is, how can I programatically insert a menu for my own application in the dialog?
regards,
Partha
How can I get the drive letter of USB drive of my Digital camera?
When the camera drive is activated I get the usual windows menu dialog for the drive. Same as the dialog when you insert a CD (Print Pictures, View SlideShow, Take no Action etc.) . My second question is, how can I programatically insert a menu for my own application in the dialog?
regards,
Partha
First, since this is a USB device, you will need a USB routine to check for devices plugged in and removed. That can be found at:
http://www.swissdelphicenter.ch/torry/showcode.php?id=2211
Next, you will want to gather up all your existing removable drives when your application starts. Then when you plug in your camera or a USB memory stick, you will be able to get the drive letter.
I do it this way in TAppName.create
for Drive := 'a' to 'z' do
if GetDriveType(PChar(Drive+' :\')) = DRIVE_REMOVABLE then
DriveList.Add(Drive);
I will set a timer as well toe nsure that everything is loaded up before I go and check what removable drives my system has.
Next, when a USB device is inserted, I start a thread using a thread component like abfThreadComponent and do thesame thing... same check, but I do it twice to ensure that it the drive, gets initialized. I do it like:
procedure deviceinserted(sender: tobject); // procedure in the USB unit
begin
InsertThread.Execute;
end;
//My thread execute routine:
for X := 1 to 2 do
begin
for Drive := 'd' to 'z' do
if GetDriveType(PChar(Drive+' :\')) = DRIVE_REMOVABLE then
begin
if not DriveInList(Drive) then
DriveList.Add(Drive);
USBDrive := Drive;
end;
delay(1000);
end;
Of course I make a drive list and keep track and search there for my drives and check DriveInList to ensure that what was pluged in is not in the list and is therefoe my newest removable drive. Drive = my USB stick.
DriveInList is:
function DriveInList(Drive:Char) : Boolean;
var
X : Integer;
begin
result := False;
// Check to see if drive already exists.
For X := 0 to DriveList.Count -1 do
if DriveList.Strings[x] = Drive then
result := true;
end;
The second part of your question should really be asked in a seperate thread since that is a seperate topic. And, where do you want this menu item? In explorer? If you want USB autoplay, that will be a search of some program or file on the memory stick/camera and if found, run it.
I hope this made sense to you and helps.
John
http://www.swissdelphicenter.ch/torry/showcode.php?id=2211
Next, you will want to gather up all your existing removable drives when your application starts. Then when you plug in your camera or a USB memory stick, you will be able to get the drive letter.
I do it this way in TAppName.create
for Drive := 'a' to 'z' do
if GetDriveType(PChar(Drive+'
DriveList.Add(Drive);
I will set a timer as well toe nsure that everything is loaded up before I go and check what removable drives my system has.
Next, when a USB device is inserted, I start a thread using a thread component like abfThreadComponent and do thesame thing... same check, but I do it twice to ensure that it the drive, gets initialized. I do it like:
procedure deviceinserted(sender: tobject); // procedure in the USB unit
begin
InsertThread.Execute;
end;
//My thread execute routine:
for X := 1 to 2 do
begin
for Drive := 'd' to 'z' do
if GetDriveType(PChar(Drive+'
begin
if not DriveInList(Drive) then
DriveList.Add(Drive);
USBDrive := Drive;
end;
delay(1000);
end;
Of course I make a drive list and keep track and search there for my drives and check DriveInList to ensure that what was pluged in is not in the list and is therefoe my newest removable drive. Drive = my USB stick.
DriveInList is:
function DriveInList(Drive:Char) : Boolean;
var
X : Integer;
begin
result := False;
// Check to see if drive already exists.
For X := 0 to DriveList.Count -1 do
if DriveList.Strings[x] = Drive then
result := true;
end;
The second part of your question should really be asked in a seperate thread since that is a seperate topic. And, where do you want this menu item? In explorer? If you want USB autoplay, that will be a search of some program or file on the memory stick/camera and if found, run it.
I hope this made sense to you and helps.
John
ASKER
Thanks John,
but how can I make sure that the USB device is a digital camera and not a flash drive?
but how can I make sure that the USB device is a digital camera and not a flash drive?
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Let me know or please accept.
ASKER
Thanks, John
ASKER
Thanks.