大家好,我写的插件dll是从主窗体调用的dll
type
TCreateCustomWindow=function(ParentFrame:TWinControl; ParentHandle:integer; ParentRect:TRect; var WinHandle:THandle):integer; stdcall;
var
CreateW:TCreateCustomWindow;
begin
CreateW:=GetProcAddress(FHLib,'Create_LEF');
if Assigned(CreateW) then
begin
if Assigned(CreateW) then LEFT_OKNO:=CreateW(ScrollBox2, ScrollBox2.Handle, ClientRect, FChildHandle);
end;在dll本身中,它看起来像
function Create_LEF(ParentFrame:TWinControl; ParentHandle:integer; ParentRect:TRect; var WinHandle:THandle):integer; stdcall; export;
begin
Result:=0;
WinHandle:=0;
try
FD3:=TForm3.Create(nil);
FD3.Parent:= ParentFrame;
Result:=integer(FD3);
WinHandle:=FD3.Handle;
if ParentHandle<>0 then begin
SetParent(WinHandle,ParentHandle);
with FD3 do begin
FD3.Align:=alTop;
FD3.Width:=ParentFrame.Width;
hirina_left:=ParentFrame.Width;
FD3.Show;
end;
end;
except
On E:exception do MessageDlg(E.Message,mtError,[mbOK],0);
end;
end;问题是我不能编辑单元格cxGrid我能做错什么吗?
发布于 2012-03-07 00:24:02
我以前遇到过这种情况,有几种方法可以解决它。这是很久以前的事了,所以你需要做一些试验和错误的工作。
function Create_LEF(ParentFrame:TWinControl; ParentHandle:integer; ParentRect:TRect; var WinHandle:THandle):integer; stdcall; export;
begin
Result:=0;
WinHandle:=0;
try
FD3:=TForm3.Create(nil);
FD3.Parent:= ParentFrame;
Result:=integer(FD3);
WinHandle:=FD3.Handle;
if ParentHandle<>0 then begin
with FD3 do begin
ParentWindow := ParentFrame.Handle;
Parent := ParentFrame;
Align:=alTop;
Width:=ParentFrame.Width;
hirina_left:=ParentFrame.Width;
Show;
end;
end;
except
On E:exception do MessageDlg(E.Message,mtError,[mbOK],0);
end;
end;这应该会解决你的问题。如果失败,请尝试将DLL的Application.Handle设置为应用程序的Application.Handle。我通常使用DLL中的Init函数来完成此操作。此函数将动态链接库的Application.Handle存储在全局变量中,并将其重新分配给应用程序的句柄,作为参数传递给函数。卸载DLL时,将DLL的application.handle赋值回其原始值,否则一切都会出错。
var
FOldHandle: THandle;
procedure Init(AHandle: THandle); stdcall;
begin
FOldHandle := Application.Handle;
Application.Handle := AHandle;
end;
procedure UnInit; stdcall;
begin
Application.Handle := FOldHandle;
end;
...https://stackoverflow.com/questions/9578915
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