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Use VARENUM

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Dennis 2024-05-09 17:19:55 +02:00 committed by GitHub
parent b4b8bbcc6b
commit 4b7f71a2dc
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1 changed files with 10 additions and 33 deletions
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43
com.d
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@ -250,11 +250,11 @@ struct ComResult {
T getD(T)() {
switch(result.vt) {
case Vt.long_: // int
case VARENUM.VT_I4: // int
static if(is(T : const long))
return result.intVal;
throw new Exception("cannot convert variant of type int to requested " ~ T.stringof);
case Vt.string_:
case VARENUM.VT_BSTR:
static if(is(T : const string))
return makeUtf8StringFromWindowsString(result.bstrVal); // FIXME free?
throw new Exception("cannot convert variant of type string to requested " ~ T.stringof);
@ -720,29 +720,6 @@ auto getComObject(T = Dynamic)(wstring c, bool tryCreateIfGetFails = true) {
// FIXME: add one to get by ProgID rather than always guid
// FIXME: add a dynamic com object that uses IDispatch
/// Variant Type
/// https://learn.microsoft.com/en-us/office/vba/language/reference/user-interface-help/vartype-function
private enum Vt
{
empty = 0,
null_ = 1,
integer = 2,
long_ = 3,
single = 4,
double_ = 5,
currency = 6,
date = 7,
string_ = 8,
object = 9,
error = 10,
boolean = 11,
variant = 12,
dataObject = 13,
decimal = 14,
byte_ = 17,
longLong = 20,
}
/* COM SERVER CODE */
T getFromVariant(T)(VARIANT arg) {
@ -751,31 +728,31 @@ T getFromVariant(T)(VARIANT arg) {
static if(is(T == void)) {
return;
} else static if(is(T == int)) {
if(arg.vt == Vt.long_)
if(arg.vt == VARENUM.VT_I4)
return arg.intVal;
} else static if (is(T == float)) {
if(arg.vt == Vt.single)
if(arg.vt == VARENUM.VT_R4)
return arg.fltVal;
} else static if (is(T == double)) {
if(arg.vt == Vt.double_)
if(arg.vt == VARENUM.VT_R8)
return arg.dblVal;
} else static if(is(T == bool)) {
if(arg.vt == Vt.boolean)
if(arg.vt == VARENUM.VT_BOOL)
return arg.boolVal ? true : false;
} else static if(is(T == string)) {
if(arg.vt == Vt.string_) {
if(arg.vt == VARENUM.VT_BSTR) {
auto str = arg.bstrVal;
scope(exit) SysFreeString(str);
return to!string(str[0 .. SysStringLen(str)]);
}
} else static if(is(T == IDispatch)) {
if(arg.vt == Vt.object)
if(arg.vt == VARENUM.VT_DISPATCH)
return arg.pdispVal;
} else static if(is(T : IUnknown)) {
// if(arg.vt == 13)
static assert(0);
} else static if(is(T == ComClient!(D, I), D, I)) {
if(arg.vt == 9)
if(arg.vt == VARENUM.VT_DISPATCH)
return ComClient!(D, I)(arg.pdispVal);
} else static if(is(T == E[], E)) {
if(arg.vt & 0x2000) {
@ -817,7 +794,7 @@ T getFromVariant(T)(VARIANT arg) {
}
}
}
throw new Exception("Type mismatch, needed "~ T.stringof ~" got " ~ to!string(cast(Vt) arg.vt));
throw new Exception("Type mismatch, needed "~ T.stringof ~" got " ~ to!string(cast(VARENUM) arg.vt));
assert(0);
}