Mega Code Archive
Check if activex is installed on a target machine
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How to check if ActiveX is installed on a target machine
Answer:
Solve 1:
Use the CLSIDFromProgID method:
{ ... }
var
strOLE: string;
begin
strOLE = "YourCOMServer.Application" {your ProgID}
if (CLSIDFromProgID(PWideChar(WideString(strOLE), ClassID) = S_OK) then
begin
{ ... }
end;
end;
Solve 2:
Check the registry:
{ ... }
const
cKEY = '\SOFTWARE\Classes\CLSID\%s\InprocServer32'
var
sKey: string;
sComServer: string;
exists: boolean;
Reg: TRegistry;
begin
Reg := TRegistry.Create;
try
Reg.RootKey := HKEY_LOCAL_MACHINE;
sKey := format(cKEY, [GuidToString(ClassID)]);
if Reg.OpenKey(sKey, False) then
begin
sComServer := Reg.ReadString('');
if FileExists(sComServer) then
begin
{ ... }
end;
end;
finally
Reg.free;
end;
end;
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