http://community.csdn.net/Expert/topic/3699/3699699.xml?temp=.7266199楼上的兄弟,这是书中原码:
function RegisterClass: Boolean;
var
WindowClass: TWndClass;
begin
{setup our new window class}
WindowClass.Style := CS_HREDRAW or CS_VREDRAW; //这个CS_HREDRAW or CS_VREDRAW值是从哪里得来的啊
WindowClass.lpfnWndProc := @DefWindowProc;
WindowClass.cbClsExtra := 0;
WindowClass.cbWndExtra := 0;
WindowClass.hInstance := hInstance;
WindowClass.hIcon := 0;
WindowClass.hCursor := 0;
WindowClass.hbrBackground := COLOR_WINDOW; 这个COLOR_WINDOW是从哪里得来的?
WindowClass.lpszMenuName := nil;
WindowClass.lpszClassName := 'TestClass';
Result := Windows.RegisterClass(WindowClass) <> 0;
end;
--------------------------------------------------------------------------------
function RegisterClass: Boolean;
var
WindowClass: TWndClass;
begin
{setup our new window class}
WindowClass.Style := CS_HREDRAW or CS_VREDRAW; //这个CS_HREDRAW or CS_VREDRAW值是从哪里得来的啊
WindowClass.lpfnWndProc := @DefWindowProc;
WindowClass.cbClsExtra := 0;
WindowClass.cbWndExtra := 0;
WindowClass.hInstance := hInstance;
WindowClass.hIcon := 0;
WindowClass.hCursor := 0;
WindowClass.hbrBackground := COLOR_WINDOW; 这个COLOR_WINDOW是从哪里得来的?
WindowClass.lpszMenuName := nil;
WindowClass.lpszClassName := 'TestClass';
Result := Windows.RegisterClass(WindowClass) <> 0;
end;
--------------------------------------------------------------------------------
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{$EXTERNALSYM COLOR_SCROLLBAR}
COLOR_SCROLLBAR = 0;
{$EXTERNALSYM COLOR_BACKGROUND}
COLOR_BACKGROUND = 1;
{$EXTERNALSYM COLOR_ACTIVECAPTION}
COLOR_ACTIVECAPTION = 2;
{$EXTERNALSYM COLOR_INACTIVECAPTION}
COLOR_INACTIVECAPTION = 3;
{$EXTERNALSYM COLOR_MENU}
COLOR_MENU = 4;
{$EXTERNALSYM COLOR_WINDOW}
COLOR_WINDOW = 5;
{$EXTERNALSYM COLOR_WINDOWFRAME}
COLOR_WINDOWFRAME = 6;
{$EXTERNALSYM COLOR_MENUTEXT}
COLOR_MENUTEXT = 7;
{$EXTERNALSYM COLOR_WINDOWTEXT}
COLOR_WINDOWTEXT = 8;
{$EXTERNALSYM COLOR_CAPTIONTEXT}
COLOR_CAPTIONTEXT = 9;
{$EXTERNALSYM COLOR_ACTIVEBORDER}
COLOR_ACTIVEBORDER = 10;
{$EXTERNALSYM COLOR_INACTIVEBORDER}
COLOR_INACTIVEBORDER = 11;
{$EXTERNALSYM COLOR_APPWORKSPACE}
COLOR_APPWORKSPACE = 12;
{$EXTERNALSYM COLOR_HIGHLIGHT}
COLOR_HIGHLIGHT = 13;
{$EXTERNALSYM COLOR_HIGHLIGHTTEXT}
COLOR_HIGHLIGHTTEXT = 14;
{$EXTERNALSYM COLOR_BTNFACE}
COLOR_BTNFACE = 15;
{$EXTERNALSYM COLOR_BTNSHADOW}
COLOR_BTNSHADOW = $10;
{$EXTERNALSYM COLOR_GRAYTEXT}
COLOR_GRAYTEXT = 17;
{$EXTERNALSYM COLOR_BTNTEXT}
COLOR_BTNTEXT = 18;
{$EXTERNALSYM COLOR_INACTIVECAPTIONTEXT}
COLOR_INACTIVECAPTIONTEXT = 19;
{$EXTERNALSYM COLOR_BTNHIGHLIGHT}
COLOR_BTNHIGHLIGHT = 20; {$EXTERNALSYM COLOR_3DDKSHADOW}
COLOR_3DDKSHADOW = 21;
{$EXTERNALSYM COLOR_3DLIGHT}
COLOR_3DLIGHT = 22;
{$EXTERNALSYM COLOR_INFOTEXT}
COLOR_INFOTEXT = 23;
{$EXTERNALSYM COLOR_INFOBK}
COLOR_INFOBK = 24; {$EXTERNALSYM COLOR_HOTLIGHT}
COLOR_HOTLIGHT = 26;
{$EXTERNALSYM COLOR_GRADIENTACTIVECAPTION}
COLOR_GRADIENTACTIVECAPTION = 27;
{$EXTERNALSYM COLOR_GRADIENTINACTIVECAPTION}
COLOR_GRADIENTINACTIVECAPTION = 28; {$EXTERNALSYM COLOR_MENUHILIGHT}
COLOR_MENUHILIGHT = 29;
{$EXTERNALSYM COLOR_MENUBAR}
COLOR_MENUBAR = 30; COLOR_ENDCOLORS = COLOR_MENUBAR; {$EXTERNALSYM COLOR_DESKTOP}
COLOR_DESKTOP = COLOR_BACKGROUND;
{$EXTERNALSYM COLOR_3DFACE}
COLOR_3DFACE = COLOR_BTNFACE;
{$EXTERNALSYM COLOR_3DSHADOW}
COLOR_3DSHADOW = COLOR_BTNSHADOW;
{$EXTERNALSYM COLOR_3DHIGHLIGHT}
COLOR_3DHIGHLIGHT = COLOR_BTNHIGHLIGHT;
{$EXTERNALSYM COLOR_3DHILIGHT}
COLOR_3DHILIGHT = COLOR_BTNHIGHLIGHT;
{$EXTERNALSYM COLOR_BTNHILIGHT}
COLOR_BTNHILIGHT = COLOR_BTNHIGHLIGHT;
{$EXTERNALSYM COLOR_WINDOWFRAME} //这上句怎么理解啊
Syntax {$EXTERNALSYM identifier}
The EXTERNALSYM directive prevents the specified Pascal symbol from appearing in header files generated for C++Builder. If an overloaded routine is specified, all versions of the routine are excluded from the header file.