Winform C # custom style in the title bar

# Region change the window style

# If! Debug

[Dllimport ("user32.dll")]
Private Static extern intptr getwindowdc (intptr hwnd );

[Dllimport ("user32.dll")]
Private Static extern int releasedc (intptr hwnd, intptr HDC );

Protected override void wndproc (ref message m)

...{

Base. wndproc (ref m );

Switch (M. msg)

...{

Case 0x86: // wm_ncactivate

Goto case 0x85;

Case 0x85: // wm_ncpaint
...{


Intptr HDC = getwindowdc (M. hwnd );

// Convert DC to. Net Graphics to easily use the drawing function provided by the framework.
Graphics GS = graphics. fromhdc (HDC );

Processing color # region processing color

Int ibox = 1;

If (this. maximizebox) ibox ++;
If (this. minimizebox) ibox ++;

// Obtain the background image.
Image imgpm = image. fromfile (application. startuppath + @ "main.bmp ");

// Gs. drawimage (imgbg, 3, 0, this. Width-(ibox * iboxwidh), systeminformation. captionheight + 2); // display the background image

// Display the background color in the title bar
Int xpos = This. Width-iboxwidh * ibox-2-ibox * 3;

Rectangle excluderect;
// The position in the title bar that does not need to be filled
For (INT I = 0; I <ibox; I ++)
...{
If (I> 0)
...{
Xpos = xpos + iboxwidh + 2;
}

Excluderect = new rectangle (xpos, 5, iboxwidh, iboxwidh + 1 );
GS. excludeclip (excluderect );
}


// Background area
Rectangle rbackground = new rectangle (0, 0, this. Width, systeminformation. captionheight + 3 );
// Gradient of the background color
System. Drawing. drawing2d. lineargradientbrush bbackground
= New system. Drawing. drawing2d. lineargradientbrush (rbackground, color. fromargb (100,145,175), color. fromargb (120,), lineargradientmode. Vertical );

// Fill the background color in the title bar
GS. fillrectangle (bbackground, rbackground );
// Display the icon file
GS. drawimage (imgpm );

# Endregion

Stringformat strfmt = new stringformat ();

// Strfmt. Alignment = stringalignment. Center;
// Strfmt. linealignment = stringalignment. Center;

// Gs. drawstring (this. text, this. Font, brushes. blchedalmond, m_rect, strfmt );
// Set the title Font
Font drawfont = new font ("", 10, system. Drawing. fontstyle. Bold );
// Set the title Color
Solidbrush drawbrush = new solidbrush (color. White );

// Re-draw the title
GS. drawstring (this. Text, drawfont, drawbrush, 30, 8 );

GS. Dispose ();

// Release the GDI resource

Releasedc (M. hwnd, HDC );

Break;

}

Case 0xa1: // wm_nclbuttondown
...{

Point mousepoint = new point (INT) M. lparam );

Mousepoint. offset (-This. Left,-This. Top );

// If (m_rect.contains (mousepoint ))
//{
//
// MessageBox. Show ("hello ");
//
//}

Break;

}

}

}

# Endif

# Endregion