Can't access dialog members in .NET

drb2k2 · September 11th, 2003, 07:36 AM

Hi all,
I can't tell you how much this is really p***ing me off. I am new to .NET, using c++ i'm creating a dialog box with a slider control in it. However I can't find out how to set the values for the slider. There is no option in the tool box area, adding a class to the dialog does nothing, no files are ever created. Although the IDC_SLIDER1 is available through the resource file I cannot access its :: functions. Does any one know how to get over this hurdle. I hope its a simple solution because I'm at my wits end. Any help at all would be much appreciated.
Cheers
DRB2k2

Ankur_Verma · September 12th, 2003, 02:08 AM

Right click on the Slider control in your dialog
box and select Add Variable. name the variable and click finish. this is a CSliderCtrl type
variable thats added to your dialog class as a
member variable.

Access any method you wanna access through this
variable

drb2k2 · September 12th, 2003, 03:55 PM

Quote:

quote:Originally posted by Ankur_Verma
Right click on the Slider control in your dialog
box and select Add Variable. name the variable and click finish. this is a CSliderCtrl type
variable thats added to your dialog class as a
member variable.

Access any method you wanna access through this
variable

When I right click on the slider bar it will only let me select "Add Class". I'm only selected a win32 project not an MFC, so i don't know if this is causing any problems. I've tried to turn the dialog into a class but it does nothing. It only generates a resource.h file with the folowing

Code:

//{{NO_DEPENDENCIES}}
// Microsoft Visual C++ generated include file.
// Used by Chp2Ex11.rc
//
#define IDD_DIALOG1                     101
#define IDC_SLIDER1                     1001
#define IDC_RED                         1001

// Next default values for new objects
// 
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE        102
#define _APS_NEXT_COMMAND_VALUE         40001
#define _APS_NEXT_CONTROL_VALUE         1002
#define _APS_NEXT_SYMED_VALUE           101
#endif
#endif

Then if i try "IDC_RED:: " to access the 'SetRange' function it isn't available in the intellisense options. I expect that the dialog needs to be made into a class but it just won't let me do it. The thing is I don't want to make an MFC project because there is a lot of excess code that I don't want to use. Any idea where I'm going wrong?
Cheers
DRB2k2

Ankur_Verma · September 16th, 2003, 02:41 AM

Since you are not making use of MFC you have to
use SendMessage to get and set these values to and
from the Slider Control like this

HWND hwndSlider = GetDlgItem(hDlg, // handle to dialog box
                  IDC_SLIDER1 // control identifier );

  SendMessage(hwndSlider, TBM_SETRANGE,
        (WPARAM) TRUE, // redraw flag
        (LPARAM) MAKELONG(iMin, iMax)); // min. & max. positions

    SendMessage(hwndSlider, TBM_SETPOS,
        (WPARAM) TRUE, // redraw flag
        (LPARAM) iSelMin);

etc.