// implement uxtheme API but without the hassle of getting a handle for control (OpenThemeData)
// and instead of sending to DrawThemeBackground a HDC to send an unsigned char*
// which could be easily converted to RGBA (or ImageBuffer, etc.)
enum CamoParts { CP_CheckBox, CP_PushButton, CP_RadioButton, ... };
enum CamoPartState { PB_Defaulted, PB_Disabled, PB_MouseHover, PB_Normal, PB_Pressed, ...};
void DrawThemeBackground(unsigned char* rgba, // image buffer, always RGBA (LittleEndian order?)
                         CamoParts cp,      // CP_PushButton
                         CamoPartState cps, // PB_Normal
                         int cx, int cy     // size of image, it's important for getting correct image buffer too
                         );

// each possible part as an enum
enum CamoParts { CP_CheckBox, CP_PushButton, CP_ScrollBarBackwardStepper, CP_ScrollBarThumb...};
enum CamoState {
    Normal,
    Default,
    Pressed,
    Focused,
    Hot, // MouseHover
    Disabled
};
void drawPart(unsigned char* rgba, // image buffer, allocated by u++, freed by u++
              CamoParts cp,      // CP_ScrollBarThumb
              CamoState cs,      // Normal
              int cx, int cy);   // size of image

struct CamoPoint
{
    dword x, y;
};
void drawPart(unsigned char* rgba, // image buffer, allocated by u++, freed by u++
              CamoParts cp,      // CP_ScrollBarThumb
              CamoState cs,      // Normal
              int cx, int cy,    // size of image
              CamoPoint* hotspot1, 
              CamoPoint* hotspot2);