73 lines
1.4 KiB
ObjectPascal
73 lines
1.4 KiB
ObjectPascal
unit Unit2;
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interface
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uses
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Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
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Vcl.Controls, Vcl.Forms, Vcl.Dialogs;
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type
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TForm2 = class(TForm)
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procedure FormShow(Sender: TObject);
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private
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fIsCommopen: Boolean;
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procedure OpenCom(DllName: string);
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{ Private declarations }
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public
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{ Public declarations }
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end;
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var
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Form2: TForm2;
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newh: hwnd;
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implementation
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uses
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U_iniParam;
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{$R *.dfm}
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procedure TForm2.OpenCom(DllName: string);
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type
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TMyFunc = function(fhandle: hwnd; sCommName: PAnsiChar; IntTime: Integer; IsMessage: Integer): hwnd; stdcall;
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var
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Tf: TMyFunc;
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Tp: TFarProc;
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Th: Thandle;
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begin
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Th := LoadLibrary(pchar(trim(DllName)));
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if Th > 0 then
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begin
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try
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Tp := GetProcAddress(Th, 'CommOpen');
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if Tp <> nil then
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begin
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Tf := TMyFunc(Tp);
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newh := Tf(Self.Handle, 'Comm1', 500, 1);
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if newh < 1 then
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begin
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Application.MessageBox(pchar('打开串口失败！'), '提示');
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end
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else
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fIsCommopen := true;
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end
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else
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begin
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fIsCommopen := false;
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end;
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finally
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// FreeLibrary(Th);
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end;
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end
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else
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begin
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fIsCommopen := false;
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Application.MessageBox(pchar('找不到 ' + trim(DllName) + ' 文件！'), '提示');
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end;
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end;
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procedure TForm2.FormShow(Sender: TObject);
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begin
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if trim(MBDYDllName) <> '' then
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OpenCom(MBDYDllName);
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end;
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end.
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