delphi各种用法

调用外部程序,等待外部程序运行完成,相当于Showmodal功能,呵呵

delphi代码
1.function WinExecAndWait32(FileName: string; Visibility: Boolean): integer;   
2.var  
3.  zAppName: array[0..512] of char; //存放应用程序名  
4.  StartupInfo: TStartupInfo;   
5.  ProcessInfo: TProcessInformation;   
6.  exitCode: Dword;   
7.  aVisibility: integer;   
8.begin  
9.  StrPCopy(zAppName, FileName);   
10.  FillChar(StartupInfo, Sizeof(StartupInfo), #0);   
11.  //给StartupInfo结构体赋值  
12.  StartupInfo.cb := Sizeof(StartupInfo);   
13.  StartupInfo.dwFlags := STARTF_USESHOWWINDOW;   
14.  if Visibility then  
15.    aVisibility := 1  
16.  else  
17.    aVisibility := 0;   
18.  
19.  StartupInfo.wShowWindow := aVisibility;   
20.  //调用CreateProcess 创建进程,执行指定的可执行文件  
21.  if not CreateProcess(nil, zAppName, nil, nil, false  
22.    , Create_NEW_CONSOLE or NORMAL_PRIORITY_CLASS   
23.    , nil, nil, StartupInfo, ProcessInfo) then  
24.    Result := -1  
25.  else  
26.  begin  
27.    //等待可执行文件退出  
28.    WaitforSingleObject(ProcessInfo.hProcess, INFINITE);   
29.    //得到进程终止状态码  
30.    GetExitCodeProcess(ProcessInfo.hProcess, exitCode);   
31.    result := Exitcode;   
32.  end;   
33.end;  

Delphi瞬间消除无用托盘图标(刷新托盘)

 

用TerminateProcess把一个进程结束后有个问题,就是如果该程序在托盘有图标的话,这个图标并不会在它被结束时也消失。当然你用鼠标从上面移过可以解决这个问题,但本人在用自己的刷新辅助软件“疯狂刷新”的时候,每5分钟结束一次,一天下来如果不动电脑,就会在托盘区生成NNN个死图标,即使你拚命去点,也要点半天才能全部消除。有没有办法一下子搞定它呢?答案是肯定的,在网上搜了很久……用Delphi编写几行代码搞定。


添加自定义类型,用作判断系统类型,
type
    TOSVersion = (osUnknown, os95, os98, osME, osNT3, osNT4, os2K, osXP, os2K3);


添加自定义函数过程

function GetOS: TOSVersion; //获得系统类型,用来取得托盘句柄
var
    OS: TOSVersionInfo;
begin
    ZeroMemory(@OS, SizeOf(OS));
    OS.dwOSVersionInfoSize := SizeOf(OS);
    GetVersionEx(OS);
    Result := osUnknown;
    if OS.dwPlatformId = VER_PLATFORM_WIN32_NT then begin
        case OS.dwMajorVersion of
            3: Result := osNT3;
            4: Result := osNT4;
            5: begin
                    case OS.dwMinorVersion of
                        0: Result := os2K;
                        1: Result := osXP;
                        2: Result := os2K3;
                    end;
                end;
        end;
    end
    else if (OS.dwMajorVersion = 4) and (OS.dwMinorVersion = 0) then
        Result := os95
    else if (OS.dwMajorVersion = 4) and (OS.dwMinorVersion = 10) then
        Result := os98
    else if (OS.dwMajorVersion = 4) and (OS.dwMinorVersion = 90) then
        Result := osME
end;


function GetSysTrayWnd(): HWND; //返回系统托盘的句柄,适合于Windows各版本
var OS: TOSVersion;
begin
    OS := GetOS;
    Result := FindWindow('Shell_TrayWnd', nil);
    Result := FindWindowEx(Result, 0, 'TrayNotifyWnd', nil);
    if (OS in [osXP, os2K3]) then
        Result := FindWindowEx(Result, 0, 'SysPager', nil);
    if (OS in [os2K, osXP, os2K3]) then
        Result := FindWindowEx(Result, 0, 'ToolbarWindow32', nil);
end;


procedure KillTrayIcons (Sender: TObject);
var
    hwndTrayToolBar: HWND;
    rTrayToolBar: tRect;
    x, y: Word;
begin
    hwndTrayToolBar := GetSysTrayWnd;
    Windows.GetClientRect(hwndTrayToolBar, rTrayToolBar);
    for x := 1 to rTrayToolBar.right - 1 do begin
        for y := 1 to rTrayToolBar.bottom - 1 do begin
            SendMessage(hwndTrayToolBar, WM_MOUSEMOVE, 0, MAKELPARAM(x, y));
        end;
    end;
end;


//调用 KillTrayIcons(self) 过程就可以瞬间清除所有无用的托盘图标了。

经过本人测试,Delphi7+XP系统下确实可以用。

delphi const常量声明演示

procedure TForm1.Button1Click(Sender: TObject);
const
 xh:integer=6;  //用const定义一个常量,并赋予整形值6
 var x:string;   //用var定义一个变量,类型为字符串
begin
x:=inttostr(xh);  //吧整形xh 值赋给 x
showmessage (inttostr(xh));
result.Text:=x;      //在文本框输出x内容
end;

end.

Delphi有标题窗口最大化全屏解决方案

 //2ccc

在 WM_SYSCOMMAND 消息事件中,加入如下代码:
    inherited;
    if Message.CmdType and $FFF0 = SC_MAXIMIZE then
    begin
      //注意 Top的值是1
SetWindowPos(Handle,HWND_TOPMOST,0,1,Screen.Width,Screen.Height,SW_NOZORDER);
      Self.Top := 0;
    end;
当然也可以在 WM_SIZE 消息事件中,加入如下代码:
    if Message.SizeType = SIZE_MAXIMIZED then
    begin
       //注意 Top的值是1
SetWindowPos(Handle,HWND_TOPMOST,0,1,Screen.Width,Screen.Height,SW_NOZORDER);
       Self.Top := 0;
    end;

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