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Hello there;
I was wondering, in windows programming, if there was a simple dialoge box or message box that takes the user input (as a string from keyboard) to be processed later on. I know there is no such thing as simple in win32API, so if you could explain to me just a bit of how it works so I can implement it. Any help would be most appreciated.........Thanks.
Do you already have a dialog? What IDE / compiler?
Add a textbox or edit control to the dialog (using the resource editor) and give it the ID of IDC_EDIT1 (or something more meaningful to your app)
When you need the text call GetDlgItemText() or GetWindowText()
Or process the edit's EN_CHANGE msgs to get each character as the user types them in (in the callbacks WM_COMMAND handler for the edit).
Make sure you use static variables if the variable is declared inside the callback.
I am using Visual C++ 2010 Express Edition
Do any of GetDlgItemText() or GetWindowText() take any arguments.
You should either download the Windows SDK or look these things up on MSDN as you are coding... Yes, both take arguments.Quote:
Originally Posted by Blacky Ducky
You might also find the forger's win32 api tutorial helpful... theForger's Win32 API Tutorial
so if id of text box is IDC_EDIT1 ,function call is GetWindowText(IDC_EDIT1,name,sizeof(name)) ?
char name[20];
If it's in a dialog, you want to use the GetDlgItemText() instead... GetWindowText() requires a window handle not an id number.Quote:
Originally Posted by nutzu2010
You also can't use sizeof() in this situation because size of txt is going to amount to the size of the pointer (2 or 4) not the length of the array (100).Code:char txt[100] = {0};
GetDlgItemText(hDialog,IDC_EDIT1,txt,99);
No it isn't.Quote:
Originally Posted by CommonTater
hDialog-handle for a dialog then How do you get the handle for a dialog?is his id number?
The dialog's handle is passed in the message loop for the dialog box...Quote:
Originally Posted by nutzu2010
So when ever the user changes something, a message is passed and you can hand your function the dialog handle...Code:INT_PTR CALLBACK DialogProc(
HWND hwndDlg,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);
Here's an example from some live code to give you the idea...
Notice how the dialog's messageloop (SetupTosser() ) passes the various parts of the call to each individual function... including the dialog box handle; Dlg.Code:
// message tosser
BOOL CALLBACK SetupTosser(HWND Dlg, UINT Msg, WPARAM Wparm, LPARAM Lparm)
{ switch (Msg)
{ case WM_INITDIALOG :
SendMessage(GetDlgItem(Dlg,4002),EM_LIMITTEXT,20,0);
ImportSettings(Dlg,Lparm);
return 1;
case WM_HELP :
ShowHelp(Dlg,L"setup");
return 1;
case WM_COMMAND: // buttons
switch (LOWORD(Wparm))
{ case 4001 :
if (HIWORD(Wparm) == EN_KILLFOCUS)
CheckRange(Dlg,4001,1000,60000);
return FALSE;
case 4003 :
if (HIWORD(Wparm) == EN_KILLFOCUS)
CheckRange(Dlg,4003,5,200);
return FALSE;
case 4004 :
if (HIWORD(Wparm) == EN_KILLFOCUS)
CheckRange(Dlg,4004,5,200);
return FALSE;
case 4005 :
if (HIWORD(Wparm) == EN_KILLFOCUS)
CheckRange(Dlg,4005,1,60);
return FALSE;
case 4006 :
if (HIWORD(Wparm) == EN_KILLFOCUS)
CheckRange(Dlg,4006,100,10000);
return FALSE;
case 4050 : // help
ShowHelp(Dlg,L"setup");
return 1;
case IDOK :
case 4051 : // OK
ExportSettings(Dlg);
return FALSE;
case IDCANCEL :
case 4052 : // Cancel
EndDialog(Dlg,0);
return FALSE; } }
return FALSE; }
You really should visit the forger's tutorial I linked you to in a previous message... he explains it much better than I can.