004CF1DA . 83C4 04 add esp, 4
004CF1DD . 33C0 xor eax, eax
004CF1DF . 5D pop ebp
004CF1E0 . 5F pop edi
004CF1E1 . 5E pop esi
004CF1E2 . 5B pop ebx
004CF1E3 . 83C4 30 add esp, 30
004CF1E6 . C2 0800 retn 8
004CF1E9 > 8D4424 10 lea eax, dword ptr [esp+10] ;应该跳到这里
往上查看代码，发现有两处跳转
004CF1C6 . 74 08 je short 004CF1D0
004CF1C8 . 81FF 00010000 cmp edi, 100
004CF1CE . 74 19 je short 004CF1E9
第一处跳或第二处不跳，都会弹出窗口
因此，我们可以直接将第一处强行跳到第二处要跳的地址(可这样改的依据见下面说明)：
004CF1C6 处： je short 004CF1D0
改为： jmp short 004CF1E9
选中后右键选复制到可执行文件，保存覆盖原文件。
RC_PALETTE is set in palettized color modes and clear in nonpalettized modes. Generally speaking, the RC_PALETTE bit is set in 8-bit color modes and clear in 4-bit and 24-bit color modes. The RC_PALETTE bit is also clear if the adapter is running in 16-bit color ("high color") mode, which for most applications produces color output every bit as good as true color. Don't make the mistake some programmers have made and rely on bit counts to tell you whether to use a palette. As sure as you do, you'll run across an oddball video adapter that defies the normal conventions and fools your application into using a palette when a palette isn't needed or not using a palette when a palette would help.
What happens if you ignore the RC_PALETTE setting and use a logical palette regardless of color depth? The application will still work because the palette manager works even on nonpalettized devices. If RC_PALETTE is 0, palettes can still be created and selected into device contexts, but calls to RealizePalette do nothing. PALETTEINDEX values are dereferenced and converted into RGB colors in the logical palette, and PALETTERGB values are simply treated as if they were standard RGB color values. OnQueryNewPalette and OnPaletteChanged aren't called because no WM_QUERYNEWPALETTE and WM_PALETTECHANGED messages are sent. As explained in an excellent article, "The Palette Manager: How and Why," available on the Microsoft Developer Network (MSDN), "The goal is to allow applications to use palettes in a device-independent fashion and to not worry about the actual palette capabilities of the device driver."
The GetObject function obtains information about a specified graphics object. Depending on the graphics object, the function places a filled-in BITMAP, DIBSECTION, EXTLOGPEN, LOGBRUSH, LOGFONT, or LOGPEN structure, or a count of table entries (for a logical palette), into a specified buffer.
int GetObject(
HGDIOBJ hgdiobj, // handle to graphics object of interest
int cbBuffer, // size of buffer for object information
LPVOID lpvObject // pointer to buffer for object information
);
Parameters
hgdiobj
A handle to the graphics object of interest. This can be a handle to one of the following: a logical bitmap, a brush, a font, a palette, a pen, or a device independent bitmap created by calling the CreateDIBSection function.
The BITMAPINFOHEADER structure contains information about the dimensions and color format of a device-independent bitmap (DIB).
typedef struct tagBITMAPINFOHEADER{ // bmih
DWORD biSize;
LONG biWidth;
LONG biHeight;
WORD biPlanes;
WORD biBitCount
DWORD biCompression;
DWORD biSizeImage;
LONG biXPelsPerMeter;
LONG biYPelsPerMeter;
DWORD biClrUsed;
DWORD biClrImportant;
} BITMAPINFOHEADER;
biBitCount
Specifies the number of bits per pixel. This value must be 1, 4, 8, 16, 24, or 32.
biCompression
Specifies the type of compression for a compressed bottom-up bitmap (top-down DIBs cannot be compressed).
It can be one of the following values:
Value Description
BI_RGB An uncompressed format.
BI_BITFIELDS Specifies that the bitmap is not compressed and that the color table consists of three doubleword color masks
that specify the red, green, and blue components, respectively, of each pixel.
This is valid when used with 16- and 32-bits-per-pixel bitmaps.
也就是说
biBitCount 颜色的位数
biCompression： BI_RGB＝0 BI_BITFIELDS＝3(使用16位、32位位图有效)
The InvalidateRect function adds a rectangle to the specified window's update region.
The update region represents the portion of the window's client area that must be redrawn.
可以考虑在适当的位置（比如消息循环）也调用这个函数来更新。
其实这是播放palette animation造成的。
What does it take to do palette animation in Windows? Just these three steps:
Call GetDeviceCaps, and check RC_PALETTE to verify that palettes are supported. Palette animation won't work if the RC_PALETTE bit isn't set.
Create a logical palette containing the colors you want to animate, and mark each palette entry with a PC_RESERVED flag. Only palette entries marked PC_RESERVED can be used for palette animation.
Draw an image using colors in the logical palette, and then call CPalette::AnimatePalette repeatedly to change the palette colors. Each time you change the palette with AnimatePalette, the colors in the image will change accordingly.
The AnimatePalette function replaces entries in the specified logical palette.
The BitBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels
from the specified source device context into a destination device context.
