| Author | Message | Time |
|---|---|---|
| Okee | I have two combobox's on one dialog and I'm processing the CBN_SELCHANGE message inside WM_COMMAND. When I change one combobox, it gets mixed up with my other combobox operations within the same WM_COMMAND. Is there a way to tell which combobox is being switched? | December 5, 2004, 12:07 AM |
| Zakath | The short answer: yes. The long answer...check the low order word of the wParam (the high order word contains the CBN_SELCHANGE constant). | December 5, 2004, 12:53 AM |
| Okee | so it might look something similar to: [code] case WM_COMMAND: { switch((HIWORD)wParam) { case IDC_COMBOBOX1: switch((LOWORD)wParam) { case CBN_SELCHANGE: break; } break; case IDC_COMBOBOX2: switch((LOWORD)wParam) { case CBN_SELCHANGE: break; } break; } } [/code] ... ? I don't know what to look for within the HIWORD. | December 5, 2004, 4:15 AM |
| UserLoser. | Try: HIWORD(wParam) | December 5, 2004, 4:30 AM |
| Okee | Hmm. MSDN says something about the HWND of the control being in the lParam. I don't seem to be able to do it though. ahhh. | December 5, 2004, 4:47 AM |
| Zakath | You have it backwards. Check the LOWORD(wParam). That will be the constant identifying the combo box. | December 5, 2004, 5:39 AM |
| Okee | [quote author=Okee link=topic=9781.msg91097#msg91097 date=1102220124] so it might look something similar to: [code] case WM_COMMAND: { switch((HIWORD)wParam) { case IDC_COMBOBOX1: switch((LOWORD)wParam) { case CBN_SELCHANGE: break; } break; case IDC_COMBOBOX2: switch((LOWORD)wParam) { case CBN_SELCHANGE: break; } break; } } [/code] ... ? I don't know what to look for within the HIWORD. [/quote] Once again, I tried something similar to this method. I'm not quite sure where to check within the loword. Will I just be looking for the name of the combobox? I'm confused still, and it has been a week or so. :-( | December 15, 2004, 2:33 AM |
| Zakath | What are the resource constants defined for the combo boxes? IDC_COMBOBOX1 and IDC_COMBOBOX2? If so, do something like this: [code] case WM_COMMAND: switch( HIWORD(wParam) ) { case CBNSELCHANGE: switch( LOWORD(wParam) ) { case IDC_COMBOBOX1: doStuff(); break; case IDC_COMBOBOX2: doOtherStuff(); break; default: break; } break; default: break; }[/code] | December 15, 2004, 3:07 AM |
| Okee | Nice, it's workin now. Thanks. | December 15, 2004, 4:54 PM |