Thread: SetFocus error

I have just recieved the handle of an Edit box in another application. I want to put some text in there.

Does the control have to have focus before i place text in there?

I looked up MSDN, it gave me the syntax:

Code:

SetFocus(handle);

when i use this i gives me the error:
[C++Error] my_IP_suite_keygen.cpp(61): Extra parameter in call to _fastcall Forms::TCustomForm::SetFocus().

so i tried:

Code:

SetFocus(handle);

when i use this i gives me the error:
[C++Error] my_IP_suite_keygen.cpp(61): Pointer to structure required on left side of -> or ->*.

I use Borland C++ Builder 3, win 2000 Pro

Also what function do i use to set the text?

SetWindowText()
PosMessage()

Is one more appropiate that the other?

Thanks.

i used

Code:

hBut = FindWindowEx(hWnd, hBut, "TEdit", NULL);

i used spy++ yo check the handle is right

ah isee.

the second bit of code

Code:

::SetFocus(hBut)

i also tried:

Code:

hBut->SetFocus()

none worked.

to set the text i tried

Code:

PostMessage(hBut, WM_SETTEXT, NULL, (LPARAM)(LPCTSTR)"hey");

which also didn't work

Code:

//---------------------------------------------------------------------------
#include <process.h>
#include <stdlib.h>
#include <time.h>
#include <vcl.h>
#include <Windows.h>
#pragma hdrstop

#include "my_IP_suite.h"

//---------------------------------------------------------------------------

#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;

//---------------------------------------------------------------------------

__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
    //const char *appPath = "C:\\Program Files\\My IP Suite\\MyIPSuite.exe";

    //execl(appPath, appPath, NULL);

    HWND hWnd;      //window handle
    HWND hBut;      //control handle

    // get handle of Reminder window
    hWnd = FindWindow(NULL, "Reminder");

    if(! hWnd) exit(0);     //if window don't found, exit program

    //move through controls, get handle of command button
    hBut = FindWindowEx(hWnd, NULL, "TButton", NULL);
    hBut = FindWindowEx(hWnd, hBut, "TButton", NULL);

    //click command button
    PostMessage(hBut, BM_CLICK, NULL, NULL);


    //get title of Options window
    hWnd = FindWindow(NULL, "Options");

    char buff[] = "HOI";


    if(! hWnd) exit(0);     //if window don't found, exit program

    //move through controls, get handle of edit box
    hBut = FindWindowEx(hWnd, NULL, "TButton", NULL);
    hBut = FindWindowEx(hWnd, hBut, "TButton", NULL);
    hBut = FindWindowEx(hWnd, hBut, "TEdit", NULL);
    hBut = FindWindowEx(hWnd, hBut, "TEdit", NULL);
    hBut = FindWindowEx(hWnd, hBut, "TEdit", NULL);


    PostMessage(hBut, WM_SETTEXT, NULL, (LPARAM)(LPCTSTR)"hey");


    //PostMessage(hBut, WM_SETTEXT, 0, (LPARAM)(LPCTSTR)"HI");
    //::SetFocus(hBut);
    //SetWindowText(hBut, buff);

}

//---------------------------------------------------------------------------

ok, sendmessage worked. how simple.

thanks for your help

no i didn't. I just though the control might to have focus before i could set the text.

But there is no need for setfocus anymore

ok ill look up AttachThreadInput() . no doubt ill need it sometime.

yeah, thats the code, and yeah it worked

Windows 2000 Pro