[reactos] 01/01: [SNDVOL32] Enable the balance and volume trackbars only if the line has a volume fader control.

[Eric Kohl]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0dd4b354b47c16fe6d46b…
commit 0dd4b354b47c16fe6d46b1be8f3a426cbef068db
Author:     Eric Kohl <eric.kohl(a)reactos.org>
AuthorDate: Sat Feb 16 13:54:46 2019 +0100
Commit:     Eric Kohl <eric.kohl(a)reactos.org>
CommitDate: Sat Feb 16 13:55:31 2019 +0100
    [SNDVOL32] Enable the balance and volume trackbars only if the line has a volume fader
control.
---
 base/applications/sndvol32/dialog.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/base/applications/sndvol32/dialog.c b/base/applications/sndvol32/dialog.c
index b8173ab763..9aed047faf 100644
--- a/base/applications/sndvol32/dialog.c
+++ b/base/applications/sndvol32/dialog.c
@@ -175,6 +175,9 @@ AddDialogControl(
         {
             /* Vertical trackbar: Volume */
+            /* Disable the volume trackbar by default */
+            EnableWindow(hwnd, FALSE);
+
             /* set up range */
             SendMessage(hwnd, TBM_SETRANGE, (WPARAM)TRUE, (LPARAM)MAKELONG(VOLUME_MIN,
VOLUME_MAX));
@@ -195,6 +198,9 @@ AddDialogControl(
         {
             /* Horizontal trackbar: Balance */
+            /* Disable the balance trackbar by default */
+            EnableWindow(hwnd, FALSE);
+
             /* set up range */
             SendMessage(hwnd, TBM_SETRANGE, (WPARAM)TRUE, (LPARAM)MAKELONG(0,
BALANCE_STEPS));
@@ -488,7 +494,7 @@ EnumConnectionsCallback(
                   /* now go through all controls and update their states */
                   for (Index = 0; Index < Line->cControls; Index++)
                   {
-                      if ((Control[Index].dwControlType & MIXERCONTROL_CT_CLASS_MASK)
== MIXERCONTROL_CT_CLASS_SWITCH)
+                      if (Control[Index].dwControlType == MIXERCONTROL_CONTROLTYPE_MUTE)
                       {
                           MIXERCONTROLDETAILS_BOOLEAN Details;
@@ -516,7 +522,7 @@ EnumConnectionsCallback(
                               }
                           }
                       }
-                      else if ((Control[Index].dwControlType &
MIXERCONTROL_CT_CLASS_MASK) == MIXERCONTROL_CT_CLASS_FADER)
+                      else if (Control[Index].dwControlType ==
MIXERCONTROL_CONTROLTYPE_VOLUME)
                       {
                           /* get volume control details */
                           if (SndMixerGetVolumeControlDetails(Mixer,
Control[Index].dwControlID, Line->cChannels, sizeof(MIXERCONTROLDETAILS_UNSIGNED),
(LPVOID)pVolumeDetails) != -1)
@@ -582,6 +588,9 @@ EnumConnectionsCallback(
                                   /* check state */
                                   LRESULT OldPosition = SendMessageW(hDlgCtrl,
TBM_GETPOS, 0, 0);
+                                  /* Enable the volume trackbar */
+                                  EnableWindow(hDlgCtrl, TRUE);
+
                                   if (OldPosition != (VOLUME_MAX - volumePosition))
                                   {
                                       /* update control state */
@@ -589,19 +598,7 @@ EnumConnectionsCallback(
                                   }
                               }
-                              if (Line->cChannels == 1)
-                              {
-                                  /* Disable the balance trackbar for mono channels */
-                                  wID = (PrefContext->Count + 1) *
IDC_LINE_SLIDER_HORZ;
-
-                                  /* get dialog control */
-                                  hDlgCtrl =
GetDlgItem(PrefContext->MixerWindow->hWnd, wID);
-                                  if (hDlgCtrl != NULL)
-                                  {
-                                      EnableWindow(hDlgCtrl, FALSE);
-                                  }
-                              }
-                              else if (Line->cChannels == 2)
+                              if (Line->cChannels == 2)
                               {
                                   /* Set the balance trackbar */
                                   wID = (PrefContext->Count + 1) *
IDC_LINE_SLIDER_HORZ;
@@ -614,6 +611,9 @@ EnumConnectionsCallback(
                                       /* check state */
                                       LRESULT OldPosition = SendMessageW(hDlgCtrl,
TBM_GETPOS, 0, 0);
+                                      /* Enable the balance trackbar */
+                                      EnableWindow(hDlgCtrl, TRUE);
+
                                       if (OldPosition != balancePosition)
                                       {
                                           /* update control state */