use transparent icons and clear the DC before drawing them to fix the background of state icons appearance (part of #9591)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55609 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/treectrl/state5.xpm

@@ -1,85 +1,85 @@
-/* XPM */
-static const char *state5_xpm[] = {
-/* columns rows colors chars-per-pixel */
-"16 16 63 1",
-", c Black",
-"z c #1E1E1E",
-"O c #3C3C3C",
-"l c #080808",
-"w c #353535",
-"  c #FFFFFF",
-"u c #010101",
-"C c #101010",
-"< c #1F1F1F",
-"9 c #090909",
-"& c #181818",
-"f c #272727",
-"x c #363636",
-"v c #545454",
-"@ c #636363",
-"7 c #020202",
-"1 c #2F2F2F",
-"3 c #5C5C5C",
-"S c #0A0A0A",
-"q c #191919",
-"c c #464646",
-"i c #030303",
-"s c #121212",
-"B c #3F3F3F",
-"h c #5D5D5D",
-"; c #6C6C6C",
-"% c #0B0B0B",
-"g c #383838",
-"+ c #565656",
-"# c #656565",
-"5 c #929292",
-"8 c #040404",
-"X c #131313",
-"o c #222222",
-"a c #0C0C0C",
-"= c #393939",
-". c #050505",
-"n c #141414",
-"V c #232323",
-"M c #323232",
-"- c #505050",
-"$ c #5F5F5F",
-"D c #0D0D0D",
-"d c #1C1C1C",
-"N c #3A3A3A",
-"k c #676767",
-"4 c #767676",
-"p c #060606",
-"Z c #151515",
-"* c #242424",
-": c #8D8D8D",
-"0 c #0E0E0E",
-"e c #4A4A4A",
-"b c #595959",
-"y c #686868",
-"r c #777777",
-"> c #868686",
-"A c #070707",
-"m c #252525",
-"2 c #434343",
-"6 c #616161",
-"j c #707070",
-"t c #8E8E8E",
-/* pixels */
-"                ",
-"                ",
-"    .XoO+@#$    ",
-"   .%&*=-;:>;   ",
-"  ,.%X<12345>6  ",
-"  7890q*we$rty  ",
-"  uipasdfgehjk  ",
-"  u78l0Xzfxcvb  ",
-"  u7i89andmMNB  ",
-"  u77ip9aXq<fV  ",
-"  ,u7ii8laCZ&X  ",
-"  ,,u77i8ASDS.  ",
-"   ,,uu7iipp7   ",
-"    ,,,u7uu,    ",
-"                ",
-"                "
-};
+/* XPM */
+static const char *state5_xpm[] = {
+/* columns rows colors chars-per-pixel */
+"16 16 63 1",
+", c Black",
+"z c #1E1E1E",
+"O c #3C3C3C",
+"l c #080808",
+"w c #353535",
+"  c None",
+"u c #010101",
+"C c #101010",
+"< c #1F1F1F",
+"9 c #090909",
+"& c #181818",
+"f c #272727",
+"x c #363636",
+"v c #545454",
+"@ c #636363",
+"7 c #020202",
+"1 c #2F2F2F",
+"3 c #5C5C5C",
+"S c #0A0A0A",
+"q c #191919",
+"c c #464646",
+"i c #030303",
+"s c #121212",
+"B c #3F3F3F",
+"h c #5D5D5D",
+"; c #6C6C6C",
+"% c #0B0B0B",
+"g c #383838",
+"+ c #565656",
+"# c #656565",
+"5 c #929292",
+"8 c #040404",
+"X c #131313",
+"o c #222222",
+"a c #0C0C0C",
+"= c #393939",
+". c #050505",
+"n c #141414",
+"V c #232323",
+"M c #323232",
+"- c #505050",
+"$ c #5F5F5F",
+"D c #0D0D0D",
+"d c #1C1C1C",
+"N c #3A3A3A",
+"k c #676767",
+"4 c #767676",
+"p c #060606",
+"Z c #151515",
+"* c #242424",
+": c #8D8D8D",
+"0 c #0E0E0E",
+"e c #4A4A4A",
+"b c #595959",
+"y c #686868",
+"r c #777777",
+"> c #868686",
+"A c #070707",
+"m c #252525",
+"2 c #434343",
+"6 c #616161",
+"j c #707070",
+"t c #8E8E8E",
+/* pixels */
+"                ",
+"                ",
+"    .XoO+@#$    ",
+"   .%&*=-;:>;   ",
+"  ,.%X<12345>6  ",
+"  7890q*we$rty  ",
+"  uipasdfgehjk  ",
+"  u78l0Xzfxcvb  ",
+"  u7i89andmMNB  ",
+"  u77ip9aXq<fV  ",
+"  ,u7ii8laCZ&X  ",
+"  ,,u77i8ASDS.  ",
+"   ,,uu7iipp7   ",
+"    ,,,u7uu,    ",
+"                ",
+"                "
+};