delphi動態呼叫dll窗體

//宣告

tshowform=function (ahandle:thandle;acaption:pchar):boolean;stdcall;
//呼叫
procedure tform1.n5click(sender: tobject); 
var mainfrm,dllform:thandle; 
showform:tshowform; 
begin 
mainfrm:=form1.handle; 
dllform:=loadlibrary('jsj.dll'); 
try 
begin 
if dllform<>0 then 
begin 
@showform:=getprocaddress(dllform,'showform'); 
showform(mainfrm,'進售價'); 
end 
else 
begin 
raiselastwin32error; 
end; 
end; 
finally 
freelibrary(dllform); 
end; 
end;
//dll動態鏈結庫
function showform(ahandle:thandle;acaption:pchar):boolean;stdcall; 
var aform:tform1; 
begin 
result:=false; 
try 
aform.caption:=acaption; 
aform.showmodal; 
result:=true; 
finally 
aform.free; 
end; 
end; 
exports 
showform; 
begin 
end.

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